I think I have a solution. Well, it worked for me.
1. Uninstall your Avast! Antivirus.
2. Download the trial of the version 4.8 (this is important, because this virus is newer, and can easily go trough avast 6 protection.
3. Go to C:/Windows/System32/drivers/etc/ and delete hists. (I dunno what that is but I don't care, because it's called hists.
4. Set your file options to see hidden files.
5. Delete a file named hosts. (If you like to explore, look inside of it)
6. Try to search for a default hosts file to download, if not, download mine:
http://www.mediafire.com/?v83ha810irykx6m
After all this, run a boot scan with the 4.8 , and when done, install Avast! that you previously had.
This did it for me, especially because it wanted to pop-up some ads.