If you keep trying to follow the path that you are taking it's only going to get worse. It's never a good idea to try & download programs such as Sygate from Limewire. They are almost always bundled with viruses that will cause problems on your computer. You should follow the advice mickjapa108 gave you above & go & have your computer checked by experts at one of the forums listed.

If you aren't up to doing that, at least run an in-depth scan with NOD32.

BTW: You can get Sygate for free here:

http://www.tucows.com/preview/213160