Is There A Doctor In The House?

My computer is sick. It has some kind of a virus that is screwing everything up. I feel horrible about the whole situation. It's my fault. And now with it being so nice outside all poor Compy wants to do is go outside and stretch his software with all of the other Gigs and Bytes, but I've quarantined him in my bedroom. Anyone out there know what I can do? I'm trying to download antivirus software, but this bug won't let me complete any of the downloads! (sigh) Poor, poor Compy...