I have a couple of programs that ask me to download another exe program in order to get rid of them. The two programs are Search Extender and Shopping Wizard.

Should I trust this website or not? I am already having issues with my home page not working properly.

Personally, I wouldn't trust them -- they're probably part of the problem. Most of the legitimate (and free) tools can be found in this thread:
http://www.daniweb.com/techtalkforums/thread5690.html

If you need to post a HijackThis log (explained in that thread), please post it in the Security forum.

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