pop-ups

[nachoman]

Often, there is "spyware" included with freeware you may have downloaded. Sometimes when you download a flash player or java, there is something in the fine print that you have to uncheck or it will install special toolbars in your browser, special search pages, etc, and it is a PITA to undo all that stuff.

I'm guessing you have some kind of spyware or adware running in the background, and you probably need someone with computer knowledge to get rid of it for you.