I need some computer help please

I have downloaded something that has changed the home page of my browser from blank to <<th.msie.cc/index.php?aid=20035.>> This has happened befor and all I had to do was select tool- internet options - general and could set it back to blank. This time when I try to do that the "Use Current" "Use Default" "Use Blank" buttons are greyed out so I can't change it.

I thought it might be a case of adware or spy ware causing this so I ran Spybot S&D to try to kill it but that didn't help either. As a last resort I did a file search of the C drive to see what might have been created on yesterdays date, hoping to find something in the temp folders but I didn't see anything except cookies( which I deleted) and some .txt files which I did create.

If it will help any I am using Windows XP and IE 6.0


I sure would like to get my hands on the #&*%$@*^R$&s that are responsible for the sites that do this to you.

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There's someone in my head, but it's not not me - Pink Floyd