Okay, so I downloaded what I thought was a new version of QuickTime because a video wouldnt work. So I downloaded it and all of a sudden I have ,magically reciever free spyware programns, I have ballon poping up on bottom right corner saying to get this buy that. It changed my home page to a spyware thing. I have MCAfee going right now but it is out of date (of course my dumb fault) I deleted the spyware programn thing already. Then since I dont know about my computer software, looked through and seems like a bunch of new stuff but im not exactly sure if its new or not. It says last use was on 3/01/06*.... I didnt get my computer until August of 06.

Some one help guide me through and tell me how to get rid of it.