Okay, I'm pretty sure my computer is infected with many viruses.

Probably because of all the things that I have downloaded from suspicious sites.

My PC is fairly new, I got it last September, it was great in the beginning, now it's pretty slow. Not that slow, but well...slow at times.

It's also not protected in any way whatsoever...() It's about time I get something to protect it and get rid of all the viruses.

Now what do you guys recommend? I'm hoping I can get something for free maybe?