For some reason I get a toolbar at the bottom of my screen and my home page re-written every time I open my browser to this :

http://scrk.com/passthrough/index.ht...www.yahoo.com/

I have tried cleaning my PC with Aware6, deleting temp files, cookies, and history. Looked for scrk in my registry with no luck. What is this and why can't i get it to go away?

It also rewrote the computer name on my PC to "dontmessmeup". I searched my hard drive and found one txt file. When I opened it the following text was written therein :

nc
840
scrk.com/
1024
337696512
29638353
518355616
29564954
*

The file name and location itself was ::

dontmessmeup@scrk[1].txt :: located in widows\TEMP\Cookies

There is no telling what else this thing is doing. But apparently it is not being detected by either Adware or by McAfee. There are also processes running I do not recognise, and my PC has been freezing a lot and I am getting a lot of GPFs lately. Could this be a virus? What should I do?