Mel,
on that link is a FAQ - click each one for the answer to appear -
http://www.trendsecure.com/portal/en...hijackthis/faq
and the overview page-
[HijackThis™ is a free utility which quickly scans your Windows computer to find settings that may have been changed by spyware, malware or other unwanted programs. HijackThis creates a report, or log file, with the results of the scan.

IMPORTANT: HijackThis does not determine what is good or bad. Do not make any changes to your computer settings unless you are an expert computer user.

Advanced users can use HijackThis to remove unwanted settings or files.

Not an expert? Just save the HijackThis report and let a friend with more troubleshooting experience take a look. A large community of users participates in online forums, where experts help interpret HijackThis scan results to clean up infected computers.

*Trend Micro provides HijackThis as a free utility, without technical support. For answers to some common questions about HijackThis please visit the Help/FAQ page. ]http://www.trendsecure.com/portal/en-US/tools/security_tools/hijackthis/overview

those should explain it better than I can & how to use it , then if you have other questions .. we can try to help.

I'm on a laptop now , not my regular computer, I have trouble hitting the right keys on this thing