your pc is infected.go
HERE scan you pc with at least three of the programmes, after which post a fresh hjt. also place hijack this in it's own folder within prog files or my docs, then change its name to, eg, 'hjt analyser 1991',. then make the new scan. the reason for changing the name ,is because there are nasties that can hide from it.
you can fix these to start
O2 - BHO: DAPHelper Class - {0000CC75-ACF3-4cac-A0A9-DD3868E06852} - C:\Program Files\DAP\DAPBHO.dll
2 - BHO: (no name) - {7E853D72-626A-48EC-A868-BA8D5E23E045} - (no file)
O9 - Extra button: Run IMVU - {d9288080-1baa-4bc4-9cf8-a92d743db949} - C:\Documents and Settings\Jethro\Start Menu\Programs\IMVU\Run IMVU.lnk (file missing)
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - %windir%\Network Diagnostic\xpnetdiag.exe (file missing)
poker ones should be fixed, they're not usually very good
O9 - Extra button: Doyles Room Poker - {40B2063F-DB01-4962-BE63-59435C01283C} - C:\PROGRA~1\DOYLES~1\client.exe
if you dont know this one fix it.
O16 - DPF: {D1E7CBDA-E60E-4970-A01C-37301EF7BF98} (Measurement Services Client v.3.11) -
http://gameadvisor.futuremark.com/global/msc311.cab
There may be more instructions from, howard or rik.