You could try System Restore to before this happened. If successful temporarily disable System restore afterwards and that will delete the infected files.
Or see if this recent thread is any help: https://community.mcafee.com/message/216157#216157
I did a system restore to before we had the problem, but it is still there. Should I do another system restore? How far back should I go? Is there another way to get rid of it?
In Safe Mode with Networking doiwnload, install, update and run a full scan (important to update before running) with the free version of this software: http://www.malwarebytes.org/products/malwarebytes_free
If that doesn't help download Hijackthis & post its log on one of the following forums for expert advice:
Do not post Hijackthis logs here, we can't help you with those !
Post the logs at one of these specialist Forums:
Be sure to read all the sticky announcements/instructions at the top of each malware forum!
Download DDS: http://www.bleepingcomputer.com/download/anti-virus/dds
Post the log here: http://www.bleepingcomputer.com/forums/forum22.html
Either way they will analyze what's going on and suggest remedies.