Hello Dai
Sorry about cross-posting - sending in anyway.
Sounds like you have made some progress cleaning your hard disk of malware, but still have a way to go. For a similar sort of problem a few days ago, I downloaded and ran the Sophos anti-rootkit (
http://www.sophos.com/products/free-tools/sophos-anti-rootkit.html ) for a good outcome. So I would suggest that you do the same. Certainly wont hurt.
Sophos shows suspect files inside the scanner and you need to click the files to get more information, and really follow directions from Sophos so you get good grasp of all the details. Sophos will either recommend or rate or something like that so you can make informed choice at cleanup time.
Also download mbam and run that through your system to see whether that helps in the cleanup.
(
http://www.filehippo.com/download_malwarebytes_anti_malware/tech/ ).
Turn off System Restore for your next scan. Try a boot-time scan (
http://forum.avast.com/index.php?topic=46521.msg394260#msg394260 ). Not that difficult once you get the hang of it.
Sometimes the trouble is files or objects that wont budge. (Not necessarily virus by now). But once they're sorted,
often deleted anyway if they not absolute needed or wanted, the cleanup is quickly accomplished. Then its time to tidy up the drives, disk cleanup, defragment, and so on.
And then most importantly is time to work out a layered defense. You can find a lot of good information in the forum to help you with this crucial final task(s). You will need to spend some time searching and reading. And always keep in mind that an ounce of prevention is worth a pound of repair when it comes to smooth running of PC systems.