Turn OFF system restore and reboot into Safe Mode. Use Google if you don't know how to do this. From there, run a series of spyware removal programs until the pest is gone.
If that fails, you're likely looking at a good old fashioned formatting, and a lesson learned the hard way regarding being more careful about the things you download.
A friend i know has windows media center, we downloaded some files, but apperently one had a virus, we got rid of everything except three minor annoyances-
1. an icon in the taskbar that cant be closed and keeps flashing a question mark and and an x, it pops up messages that when you click on, directs u to a program called mailware or somthing online.
2. The homepage has been deleted, every time you open internet explorer, it brings you to a page called virus protection and it gives you links to pages, telling you that your conmputer is infected.wors of all, wetever the homepage is, you can no longer go to if you type it in.
3. System restore points dont work anymore, when u do it, it restarts and says "system restore failed"
PLEASE HELP ME get rid og this cursed virus or wetever it is!