Download, install, update, and run Ad-Aware and Spybot and let these programs remove all of the garbage that they find.

http://www.lavasoftusa.com Ad-Aware

http://www.safer-networking.org/index.php?page=download Spybot

If these programs don't solve the problem, go to the following site and follow the directions to download and run the analysis tool called HijackThis.

http://tomcoyote.com/hjt/

Generate a log file, then open it and copy and paste the text of the log file in a message in one of the following forums:

http://subratam.org/
http://www.zerosrealm.com/forums/
http://www.bleepingcomputer.com/

where a certified HijackThis expert can offer advice on how to fix the problem:

Steve

I feel your pain. I remember my first encounter with ' about:blank'. I was fixing someones pc for them and it took over 15 hours for me to finally figure out how to get rid of it and back then it was when it first came out. It has random hidden files named in various ways that causes it to reinstall itself even after it's removed after a couple of restarts. The key is to get the software to find and remove the hidden files. My notes are at home on how I done this and I'll be glad to send them to you if the other suggestions don't work for you.