There was nothing in the startup folder at all apart from 'desktop.ini, configuration settings' icon.
I ran msconfig and the only thing that I didn't recognise was 'wininet.exe' and 'wintsu.exe'
I already have hijackthis installed, log below.
Logfile of HijackThis v1.97.7
Scan saved at 23:54:53, on 27/03/2004
Platform: Windows XP (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP1 (6.00.2600.0000)
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:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\ZoneLabs\vsmon.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\Alcatel\SpeedTouch USB\Dragdiag.exe
C:\Program Files\Java\j2re1.4.2_01\bin\jusched.exe
C:\Program Files\Common Files\Real\Update_OB\realsched.exe
C:\PROGRA~1\ZONELA~1\ZONEAL~1\zlclient.exe
C:\Program Files\Messenger\msmsgs.exe
C:\WINDOWS\System\wininet.exe
C:\WINDOWS\System32\wintsu.exe
C:\Program Files\QUICKENW\QWDLLS.EXE
C:\WINDOWS\System32\devldr32.exe
C:\Program Files\Adobe\Photoshop 7.0\Photoshop.exe
C:\PROGRA~1\mozilla.org\Mozilla\Mozilla.exe
C:\Documents and Settings\David\Local Settings\Temp\Temporary Directory 55 for hijackthis.zip\HijackThis.exe
O2 - BHO: (no name) - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 6.0\Reader\ActiveX\AcroIEHelper.dll
O4 - HKLM\..\Run: [NeroCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [SpeedTouch USB Diagnostics] "C:\Program Files\Alcatel\SpeedTouch USB\Dragdiag.exe" /icon
O4 - HKLM\..\Run: [SunJavaUpdateSched] C:\Program Files\Java\j2re1.4.2_01\bin\jusched.exe
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Common Files\Real\Update_OB\realsched.exe" -osboot
O4 - HKLM\..\Run: [Zone Labs Client] C:\PROGRA~1\ZONELA~1\ZONEAL~1\zlclient.exe
O4 - HKCU\..\Run: [MSMSGS] "C:\Program Files\Messenger\msmsgs.exe" /background
O4 - HKCU\..\Run: [System Update] C:\WINDOWS\System\wininet.exe
O4 - HKCU\..\Run: [WCPS] C:\WINDOWS\System32\wintsu.exe
O4 - HKCU\..\Run: [Mozilla Quick Launch] "C:\Program Files\mozilla.org\Mozilla\Mozilla.exe" -turbo
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office10\OSA.EXE
O4 - Global Startup: Quicken Startup.lnk = C:\Program Files\QUICKENW\QWDLLS.EXE
O8 - Extra context menu item: E&xport to Microsoft Excel - res://C:\PROGRA~1\MICROS~2\Office10\EXCEL.EXE/3000
O16 - DPF: {166B1BCA-3F9C-11CF-8075-444553540000} (Shockwave ActiveX Control) -
http://download.macromedia.com/pub/shockwave/cabs/director/swdir.cabO16 - DPF: {41F17733-B041-4099-A042-B518BB6A408C} -
http://a1540.g.akamai.net/7/1540/52/20021205/qtinstall.info.apple.com/drakken/us/win/QuickTimeInstaller.exeO16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) -
http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cabO17 - HKLM\System\CCS\Services\Tcpip\..\{FBFE5E95-0EB9-44E5-A224-0F0059308042}: NameServer = 213.120.62.98 213.120.62.99