Can you get into Safe-Mode?
If not the Public AntiVirus Updater
may help, update the original Public AntiVirus boot cd and it may fix the issue.
If you have a copy of XP the UBCD4Win
may be able to help you remove the infection.
If you do remove it I'd still advise submitting a hijackthis log here.
to make sure your PC if free from infection.How to submit a hijackthis logDownload Hijackthis
Try running the following from safe mode (Getting to safe-mode) Sysclean
you'll also need the virus template file from here lpt***.zip
remember to extract the contents of the zip file into the same folder as Sysclean.com
If your good with the command line also try Sophos Command Line scanner
this command will scan all of your hdd's SAV32CLI.EXE -F -di -remove -dn -mbr -all -zip -p=avscanlog.txt and give you a log file to review afterwards.Also try installing and running A2 Free and Ewido
I'd also run Spybot
and AdawareIf your using Win2K/XP run adaware/spybot from "safe mode with command prompt"At the C:\ prompt type the following:-
C:\progra~1\spybot~1\spybotsd.exe /autocheck /autofix