Bueno gente, saludos a todos; los felicito por el sitio

, como podrán ver soy nuevito y estoy buscando la manera de proteger mi sistema de cualquier tipo de basura.
Afortunadamente di con uds., que por lo que veo me van a poder ayudar mucho, no soy una persona muy entrenada en cuanto a la seguridad de mi sistema, pero estoy comenzando con ésto y espero vuestro diagnóstico a si de esa manera ir aprendiendo. Que creo es la finalidad de éste sitio.
Saludos.
Logfile of HijackThis v1.99.1
Scan saved at 01:19:57 a.m., on 06/07/2005
Platform: Windows 2000 SP4 (WinNT 5.00.2195)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)
Running processes:
C:\WINNT\System32\smss.exe
C:\WINNT\system32\winlogon.exe
C:\WINNT\system32\services.exe
C:\WINNT\system32\lsass.exe
C:\WINNT\system32\svchost.exe
C:\WINNT\system32\spoolsv.exe
C:\Program Files\Common Files\Symantec Shared\ccEvtMgr.exe
C:\WINNT\System32\svchost.exe
C:\Program Files\Norton AntiVirus\navapsvc.exe
C:\WINNT\system32\regsvc.exe
C:\WINNT\system32\MSTask.exe
C:\WINNT\System32\WBEM\WinMgmt.exe
C:\Program Files\ORL\VNC\WinVNC.exe
C:\WINNT\system32\svchost.exe
C:\WINNT\Explorer.EXE
C:\WINNT\system32\RunDll32.exe
C:\Program Files\SiS630_V1.01\utility\khooker.exe
C:\Program Files\Common Files\Symantec Shared\ccApp.exe
C:\WINNT\system32\internat.exe
C:\WINNT\system32\NOTEPAD.EXE
C:\Program Files\Internet Explorer\iexplore.exe
C:\WINNT\system32\taskmgr.exe
C:\PROGRA~1\WinZip\winzip32.exe
C:\DOCUME~1\GMANTE~1\LOCALS~1\Temp\HijackThis[www.trucoswindows.net].exe
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page =
http://192.168.208.112/about.htmlR1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyServer = 192.168.208.100:3128
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 5.0\Reader\ActiveX\AcroIEHelper.ocx
O2 - BHO: NAV Helper - {BDF3E430-B101-42AD-A544-FADC6B084872} - C:\Program Files\Norton AntiVirus\NavShExt.dll
O3 - Toolbar: @msdxmLC.dll,-1@1033,&Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINNT\System32\msdxm.ocx
O3 - Toolbar: Norton AntiVirus - {42CDD1BF-3FFB-4238-8AD1-7859DF00B1D6} - C:\Program Files\Norton AntiVirus\NavShExt.dll
O4 - HKLM\..\Run: [Synchronization Manager] mobsync.exe /logon
O4 - HKLM\..\Run: [Cmaudio] RunDll32 cmicnfg.cpl,CMICtrlWnd
O4 - HKLM\..\Run: [khooker] C:\Program Files\SiS630_V1.01\utility\khooker.exe
O4 - HKLM\..\Run: [ccApp] "C:\Program Files\Common Files\Symantec Shared\ccApp.exe"
O4 - HKLM\..\Run: [ccRegVfy] "C:\Program Files\Common Files\Symantec Shared\ccRegVfy.exe"
O4 - HKLM\..\Run: [Symantec NetDriver Monitor] C:\PROGRA~1\SYMNET~1\SNDMon.exe /Consumer
O4 - HKLM\..\Run: [SSC_UserPrompt] C:\Program Files\Common Files\Symantec Shared\Security Center\UsrPrmpt.exe
O4 - HKLM\..\Run: [\\PRINTERCOMMBASE\EPSON Stylus C63 Series] C:\WINNT\system32\spool\DRIVERS\W32X86\3\E_S4I4C1.EXE /P41 "\\PRINTERCOMMBASE\EPSON Stylus C63 Series" /O5 "LPT1:" /M "Stylus C63"
O4 - HKLM\..\Run: [WinVNC] "C:\Program Files\ORL\VNC\WinVNC.exe" -servicehelper
O4 - HKLM\..\Run: [NeroCheck] C:\WINNT\system32\\NeroCheck.exe
O4 - HKCU\..\Run: [internat.exe] internat.exe
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office\OSA9.EXE
O9 - Extra button: Yahoo! Messenger - {E5D12C4E-7B4F-11D3-B5C9-0050045C3C96} - C:\DOCUME~1\GMANTE~1\MYDOCU~1\MESSEN~1\YPager.exe
O9 - Extra 'Tools' menuitem: Yahoo! Messenger - {E5D12C4E-7B4F-11D3-B5C9-0050045C3C96} - C:\DOCUME~1\GMANTE~1\MYDOCU~1\MESSEN~1\YPager.exe
O12 - Plugin for .spop: C:\Program Files\Internet Explorer\Plugins\NPDocBox.dll
O16 - DPF: ChatSpace Full Java Client 4.0.0.320 -
http://63.102.226.240:8000/Java/cfs40320.cabO16 - DPF: JT's Blocks -
http://download.games.yahoo.com/games/clients/y/blt1_x.cabO16 - DPF: Tornado 21 -
http://download.games.yahoo.com/games/clients/y/t21t0_x.cabO16 - DPF: Yahoo! Backgammon -
http://download.games.yahoo.com/games/clients/y/at1_x.cabO16 - DPF: Yahoo! Blackjack -
http://download.games.yahoo.com/games/clients/y/jt0_x.cabO16 - DPF: Yahoo! Bridge -
http://download.games.yahoo.com/games/clients/y/bt1_x.cabO16 - DPF: Yahoo! Canasta -
http://download.games.yahoo.com/games/clients/y/yt1_x.cabO16 - DPF: Yahoo! Chat -
http://us.chat1.yimg.com/us.yimg.com/i/cha...t/c381/chat.cabO16 - DPF: Yahoo! Checkers -
http://download.games.yahoo.com/games/clients/y/kt4_x.cabO16 - DPF: Yahoo! Chess -
http://download.games.yahoo.com/games/clients/y/ct2_x.cabO16 - DPF: Yahoo! Chinese Checkers -
http://download.games.yahoo.com/games/clients/y/cct0_x.cabO16 - DPF: Yahoo! Dominoes -
http://download.games.yahoo.com/games/clients/y/dot8_x.cabO16 - DPF: Yahoo! Dots -
http://download.games.yahoo.com/games/clients/y/dtt1_x.cabO16 - DPF: Yahoo! Fleet -
http://download.games.yahoo.com/games/clients/y/fltt3_x.cabO16 - DPF: Yahoo! Games Voice Chat -
http://presence.games.yahoo.com/yog/y/va1_x.cabO16 - DPF: Yahoo! Gin -
http://download.games.yahoo.com/games/clients/y/nt1_x.cabO16 - DPF: Yahoo! JAPAN Billiards -
http://yog38.games.mci.yahoo.co.jp/yog/yj/pot3_x.cabO16 - DPF: Yahoo! Literati -
http://download.games.yahoo.com/games/clients/y/tt3_x.cabO16 - DPF: Yahoo! MahJong -
http://download.games.yahoo.com/games/clients/y/ot0_x.cabO16 - DPF: Yahoo! MahJong Solitaire -
http://download.games.yahoo.com/games/clients/y/mjst4_x.cabO16 - DPF: Yahoo! Poker -
http://download.games.yahoo.com/games/clients/y/pt3_x.cabO16 - DPF: Yahoo! Pool 2 -
http://download.games.yahoo.com/games/clients/y/pote_x.cabO16 - DPF: Yahoo! Pyramids -
http://download.games.yahoo.com/games/clients/y/pyt1_x.cabO16 - DPF: Yahoo! Reversi -
http://download.games.yahoo.com/games/clients/y/rt0_x.cabO16 - DPF: Yahoo! Spades -
http://download.games.yahoo.com/games/clients/y/st2_x.cabO16 - DPF: Yahoo! Towers 2.0 -
http://download.games.yahoo.com/games/clients/y/ywt0_x.cabO16 - DPF: {15AD6789-CDB4-47E1-A9DA-992EE8E6BAD6} -
http://static.windupdates.com/cab/6247971C.../bridge-c18.cabO16 - DPF: {2B323CD9-50E3-11D3-9466-00A0C9700498} (Yahoo! Audio Conferencing) -
http://us.chat1.yimg.com/us.yimg.com/i/cha...v45/yacscom.cabO16 - DPF: {62789780-B744-11D0-986B-00609731A21D} (Autodesk MapGuide ActiveX Control) -
http://www.mapasgeo.com.ar/plugins/mgaxctrl.cabO16 - DPF: {7D1E9C49-BD6A-11D3-87A8-009027A35D73} (Yahoo! Audio UI1) -
http://chat.yahoo.com/cab/yacsui.cabO16 - DPF: {8714912E-380D-11D5-B8AA-00D0B78F3D48} (Yahoo! Webcam Upload Wrapper) -
http://chat.yahoo.com/cab/yuplapp.cabO16 - DPF: {B38870E4-7ECB-40DA-8C6A-595F0A5519FF} (MsnMessengerSetupDownloadControl Class) -
http://messenger.msn.com/download/msnmesse...pdownloader.cabO16 - DPF: {D22AC3EF-B7D8-11D5-A281-005056BF0101} (plug Class) -
http://www.gxplugin.com/loader/dll/gxbplug.dllO16 - DPF: {E504EE6E-47C6-11D5-B8AB-00D0B78F3D48} (Yahoo! Webcam Viewer Wrapper) -
http://chat.yahoo.com/cab/yvwrctl.cabO16 - DPF: {F58E1CEF-A068-4C15-BA5E-587CAF3EE8C6} (MSN Chat Control 4.5) -
http://fdl.msn.com/public/chat/msnchat45.cabO17 - HKLM\System\CCS\Services\Tcpip\..\{B9357BD1-5D15-4EC3-A2A4-F377D1B7E602}: NameServer = 192.168.208.3,200.58.26.2
O17 - HKLM\System\CS1\Services\Tcpip\Parameters: SearchList = megatran.com.ar
O17 - HKLM\System\CS2\Services\Tcpip\Parameters: SearchList = megatran.com.ar
O17 - HKLM\System\CCS\Services\Tcpip\Parameters: SearchList = megatran.com.ar
O23 - Service: pcAnywhere Host Service (awhost32) - Symantec Corporation - C:\Program Files\Symantec\pcAnywhere\awhost32.exe
O23 - Service: Symantec Event Manager (ccEvtMgr) - Symantec Corporation - C:\Program Files\Common Files\Symantec Shared\ccEvtMgr.exe
O23 - Service: Symantec Password Validation Service (ccPwdSvc) - Symantec Corporation - C:\Program Files\Common Files\Symantec Shared\ccPwdSvc.exe
O23 - Service: Logical Disk Manager Administrative Service (dmadmin) - VERITAS Software Corp. - C:\WINNT\System32\dmadmin.exe
O23 - Service: Norton AntiVirus Auto Protect Service (navapsvc) - Symantec Corporation - C:\Program Files\Norton AntiVirus\navapsvc.exe
O23 - Service: ScriptBlocking Service (SBService) - Symantec Corporation - C:\PROGRA~1\COMMON~1\SYMANT~1\SCRIPT~1\SBServ.exe
O23 - Service: Symantec Network Drivers Service (SNDSrvc) - Symantec Corporation - C:\Program Files\Common Files\Symantec Shared\SNDSrvc.exe
O23 - Service: SymWMI Service (SymWSC) - Symantec Corporation - C:\Program Files\Common Files\Symantec Shared\Security Center\SymWSC.exe
O23 - Service: VNC Server (winvnc) - Unknown owner - C:\Program Files\ORL\VNC\WinVNC.exe" -service (file missing)