[Closed] Newbie baseline

Hi, my computer is running as though it's in the dark ages- she's an old one, but usually reliable. The ususal anti-virus thing isn't showing any problems but we keep getting Windows messages saying we are running out of disk space memory- even though there are no programs on there! Can anyone help?
Thanks
Here is the Hijack This log:

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 15:13:36, on 28/04/2008
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)
Boot mode: Normal

Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Virgin Broadband\PCguard\Fws.exe
C:\WINDOWS\system32\brsvc01a.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\system32\brss01a.exe
C:\Program Files\Common Files\Authentium\AntiVirus\dvpapi.exe
C:\Program Files\CA\PPRT\bin\ITMRTSVC.exe
C:\Program Files\Raxco\PerfectDisk\PDAgent.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\wscntfy.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\Virgin Broadband\advisor\Broadbandadvisor.exe
C:\Program Files\Virgin Broadband\PCguard\Rps.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\Xtreme Desktop\xdc\xdc.exe
C:\Program Files\Virgin Broadband\PCguard\rpsupdaterR.exe
C:\WINDOWS\system32\dllhost.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Trend Micro\HijackThis\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.co.uk/
R3 - URLSearchHook: &Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - (no file)
O2 - BHO: Pop-Up Blocker BHO - {3C060EA2-E6A9-4E49-A530-D4657B8C449A} - C:\Program Files\Virgin Broadband\PCguard\pkR.dll
O2 - BHO: (no name) - {5DDE5591-A8AB-4897-93EF-1E4E943F85A7} - C:\Program Files\Video ActiveX Access\iesplg.dll (file missing)
O3 - Toolbar: Protection Bar - {CC18AE76-7E65-4258-A193-9EA0C52DA6B8} - C:\Program Files\Video ActiveX Access\iesbpl.dll (file missing)
O4 - HKLM\..\Run: [IMJPMIG8.1] "C:\WINDOWS\IME\imjp8_1\IMJPMIG.EXE" /Spoil /RemAdvDef /Migration32
O4 - HKLM\..\Run: [PHIME2002ASync] C:\WINDOWS\system32\IME\TINTLGNT\TINTSETP.EXE /SYNC
O4 - HKLM\..\Run: [PHIME2002A] C:\WINDOWS\system32\IME\TINTLGNT\TINTSETP.EXE /IMEName
O4 - HKLM\..\Run: [AVG7_CC] C:\PROGRA~1\Grisoft\AVGFRE~1\avgcc.exe /STARTUP
O4 - HKLM\..\Run: [XDc] C:\Program Files\Xtreme Desktop\xdc\startxdc.exe
O4 - HKLM\..\Run: [Broadbandadvisor.exe] "C:\Program Files\Virgin Broadband\advisor\Broadbandadvisor.exe" /AUTORUN
O4 - HKLM\..\Run: [PCguard] "C:\Program Files\Virgin Broadband\PCguard\Rps.exe"
O4 - HKLM\..\Run: [-FreedomNeedsReboot] "C:\Program Files\Virgin Broadband\PCguard\ZkRunOnceR.exe"
O4 - HKLM\..\RunOnce: [IndexCleaner] "C:\Program Files\Virgin Broadband\PCguard\IdxClnR.exe"
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [msnmsgr] "C:\Program Files\MSN Messenger\msnmsgr.exe" /background
O4 - HKCU\..\RunOnce: [IndexCleaner] "C:\Program Files\Virgin Broadband\PCguard\IdxClnR.exe"
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O16 - DPF: {17492023-C23A-453E-A040-C7C580BBF700} (Windows Genuine Advantage Validation Tool) - http://go.microsoft.com/fwlink/?linkid=39204
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - http://fpdownload2.macromedia.com/get/shoc…ash/swflash.cab
O22 - SharedTaskScheduler: bosken - {d1e5ca97-235e-4ff0-9b92-7543c9d61ff4} - C:\WINDOWS\system32\zkpssqa.dll (file missing)
O23 - Service: BrSplService (Brother XP spl Service) - brother Industries Ltd - C:\WINDOWS\system32\brsvc01a.exe
O23 - Service: DvpApi (dvpapi) - Authentium, Inc. - C:\Program Files\Common Files\Authentium\AntiVirus\dvpapi.exe
O23 - Service: CA Pest Patrol Realtime Protection Service (ITMRTSVC) - CA, Inc. - C:\Program Files\CA\PPRT\bin\ITMRTSVC.exe
O23 - Service: PDAgent - Raxco Software, Inc. - C:\Program Files\Raxco\PerfectDisk\PDAgent.exe
O23 - Service: PDEngine - Raxco Software, Inc. - C:\Program Files\Raxco\PerfectDisk\PDEngine.exe
O23 - Service: Virgin Broadband PCguard Update Service (RPSUpdaterR) - Radialpoint Inc. - C:\Program Files\Virgin Broadband\PCguard\rpsupdaterR.exe
O23 - Service: PCguard Firewall (RP_FWS) - Virgin Media - C:\Program Files\Virgin Broadband\PCguard\Fws.exe

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