When i get these types of viruses i use the IE search option and find USER.DATA.delete it and reboot.When the puter starts back up it sees the user data file is missing and rebuilds the registry to its last saved point and the virus is gone.This has worked for me so far.Also you can go to Micro trend Housecall for an on line scan to double check.next time try it as a last resort.I found this on my own
cheers