My mother'd been on the computer and left it connected for me; after it disconnected, I discovered it had been dialing a number and username I didn't recognise, but with my fathers name in. I'm not sure why, and there were 4 unrecognised links on my computer. I've deleted those, and corrected my net connection, but here is the log, just in case (it seems to have gotten longer):

Logfile of HijackThis v1.98.1
Scan saved at 17:37:10, on 25/11/2004
Platform: Windows XP SP1 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)

Running processes:
D:\WINDOWS\System32\smss.exe
D:\WINDOWS\system32\winlogon.exe
D:\WINDOWS\system32\services.exe
D:\WINDOWS\system32\lsass.exe
D:\WINDOWS\system32\svchost.exe
D:\WINDOWS\System32\svchost.exe
D:\WINDOWS\Explorer.EXE
D:\WINDOWS\system32\LEXBCES.EXE
D:\WINDOWS\system32\spoolsv.exe
D:\WINDOWS\system32\LEXPPS.EXE
D:\PROGRA~1\Grisoft\AVG6\avgserv.exe
D:\WINDOWS\system32\drivers\KodakCCS.exe
D:\Program Files\Common Files\Microsoft Shared\VS7Debug\mdm.exe
D:\WINDOWS\System32\nvsvc32.exe
D:\WINDOWS\System32\ScsiAccess.EXE
D:\WINDOWS\System32\svchost.exe
D:\WINDOWS\System32\RunDll32.exe
D:\PROGRA~1\Grisoft\AVG6\avgcc32.exe
D:\Program Files\Lexmark X74-X75\lxbbbmgr.exe
D:\Program Files\QuickTime\qttask.exe
D:\Program Files\Common Files\Logitech\QCDriver2\LVCOMS.EXE
D:\Program Files\Microsoft IntelliPoint\point32.exe
D:\Program Files\Lexmark X74-X75\lxbbbmon.exe
D:\Program Files\Internet Explorer\iexplore.exe
D:\WINDOWS\System32\ctfmon.exe
D:\WINDOWS\system32\explorer.exe
D:\Program Files\Internet Explorer\IEXPLORE.EXE
C:\unzipped\hijackthis\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://red.clientapps.yahoo.com/cust...search/ie.html
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://red.clientapps.yahoo.com/cust.../www.yahoo.com
R1 - HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) = http://red.clientapps.yahoo.com/cust.../www.yahoo.com
O2 - BHO: Yahoo! Companion BHO - {02478D38-C3F9-4efb-9B51-7695ECA05670} - D:\Program Files\Yahoo!\Companion\Installs\cpn\ycomp5_3_19_0.dll
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - D:\Program Files\Adobe\Acrobat 5.0\Reader\ActiveX\AcroIEHelper.ocx
O2 - BHO: (no name) - {A78860C8-EE1A-46DF-A97F-E3E6D433E80B} - D:\WINDOWS\system32\u88bawx.dll
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - D:\WINDOWS\System32\msdxm.ocx
O3 - Toolbar: Yahoo! Companion - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - D:\Program Files\Yahoo!\Companion\Installs\cpn\ycomp5_3_19_0.dll
O4 - HKLM\..\Run: [SiSUSBRG] D:\WINDOWS\SiSUSBrg.exe
O4 - HKLM\..\Run: [Cmaudio] RunDll32 cmicnfg.cpl,CMICtrlWnd
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE D:\WINDOWS\System32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [nwiz] nwiz.exe /install
O4 - HKLM\..\Run: [AVG_CC] D:\PROGRA~1\Grisoft\AVG6\avgcc32.exe /STARTUP
O4 - HKLM\..\Run: [Lexmark X74-X75] "D:\Program Files\Lexmark X74-X75\lxbbbmgr.exe"
O4 - HKLM\..\Run: [NeroCheck] D:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [QuickTime Task] "D:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [LVCOMS] D:\Program Files\Common Files\Logitech\QCDriver2\LVCOMS.EXE
O4 - HKLM\..\Run: [IntelliPoint] "D:\Program Files\Microsoft IntelliPoint\point32.exe"
O4 - HKLM\..\Run: [explorer] D:\WINDOWS\system32\explorer.exe -go -c77 -w
O4 - HKLM\..\RunOnce: [b8fmu00.exe] D:\WINDOWS\System32\b8fmu00.exe /k
O4 - HKCU\..\RunOnce: [b8fmu00.exe] D:\WINDOWS\System32\b8fmu00.exe /k
O4 - Global Startup: Microsoft Office.lnk = D:\Program Files\Microsoft Office\Office10\OSA.EXE
O8 - Extra context menu item: E&xport to Microsoft Excel - res://D:\PROGRA~1\MICROS~2\Office10\EXCEL.EXE/3000
O9 - Extra button: AIM - {AC9E2541-2814-11d5-BC6D-00B0D0A1DE45} - D:\Program Files\AIM95\aim.exe
O9 - Extra button: Related - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - D:\WINDOWS\web\related.htm
O9 - Extra 'Tools' menuitem: Show &Related Links - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - D:\WINDOWS\web\related.htm
O9 - Extra button: (no name) - {CD67F990-D8E9-11d2-98FE-00C0F0318AFE} - (no file)
O12 - Plugin for .spop: D:\Program Files\Internet Explorer\Plugins\NPDocBox.dll
O16 - DPF: Yahoo! Literati - http://download.games.yahoo.com/game...ts/y/tt2_x.cab
O16 - DPF: {11111111-1111-1111-1111-111111113457} - file://c:\ied_s7m.cab
O16 - DPF: {11111111-1111-1111-1111-511111113457} - file://c:\x.cab
O16 - DPF: {11111111-1111-1111-1111-511111113458} - file://c:\x.cab
O16 - DPF: {30528230-99F7-4BB4-88D8-FA1D4F56A2AB} (YInstStarter Class) - http://us.dl1.yimg.com/download.yaho...st20040510.cab
O16 - DPF: {74D05D43-3236-11D4-BDCD-00C04F9A3B61} (HouseCall Control) - http://a840.g.akamai.net/7/840/537/2...ll/xscan53.cab
O16 - DPF: {8E0D4DE5-3180-4024-A327-4DFAD1796A8D} (MessengerStatsClient Class) - http://messenger.zone.msn.com/binary...t.cab31267.cab
O16 - DPF: {9A9307A0-7DA4-4DAF-B042-5009F29E09E1} (ActiveScan Installer Class) - http://www.pandasoftware.com/activescan/as5/asinst.cab
O16 - DPF: {9EB320CE-BE1D-4304-A081-4B4665414BEF} (MediaTicketsInstaller Control) - file://c:\x.cab
O16 - DPF: {CE69F98F-2AF3-4306-BAC6-A79070EDA1B4} (Zylom Loader Object) - http://game18.zylomgames.com/activex/zylomloader.cab
O16 - DPF: {F04F4F32-6457-401A-8169-D2773DDFF930} - http://us.dl1.yimg.com/download.yaho...opper1_3uk.cab
O16 - DPF: {F58E1CEF-A068-4C15-BA5E-587CAF3EE8C6} (MSN Chat Control 4.5) - http://chat.msn.com/bin/msnchat45.cab
O16 - DPF: {F6BF0D00-0B2A-4A75-BF7B-F385591623AF} (Solitaire Showdown Class) - http://messenger.zone.msn.com/binary...n.cab31267.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{1EC82A6D-21E8-49BA-9ACB-2EDA055190FC}: NameServer = 212.67.96.129 212.67.120.148
O17 - HKLM\System\CS1\Services\Tcpip\..\{1EC82A6D-21E8-49BA-9ACB-2EDA055190FC}: NameServer = 212.67.96.129 212.67.120.148
O21 - SSODL: SystemCheck2 - {54645654-2225-4455-44A1-9F4543D34545} - D:\WINDOWS\System32\vbsys2 (file missing)

Edit: I would appreciate tips as I am very worried. My internet connection automatically goes to dial a number I dont recognise, and having done a bit of online research I've realised that part of my log involves a trojan virus - the .cab's.