First of all, my ANTIVIRUS hasn't DETECTED anything so I don't think its a virus. I don't download anything from sites I don't trust anyways.

At first, it wasn't so bad. I would start the computer, and it would FREEZE up after about 20 or 30 seconds. But before that, I could get on the explorer really quick and be able to work in that window while the rest of the computer was frozen. So, whenever I wanted to use microsoft word, I would have to restart and open word before the computer froze up and I would be able to work with that.
About a week after this started happening, I went home and brought my computer with me. Once it was away from the internet, this stopped happening. SO, a good long time after I went home I was able to use my computer with out it freezing. WELL, I guess it was only a week or so. But then it flashed that blue screen that says there is something wrong with my computer and it started doing this again. I tried unplugging it completely from the internet again, but this time it didn't help. Once again I'm working in internet explorer while the rest of the computer is frozen.
The clock doesn't EVEN keep time after it is frozen.

Basically, I want to know if its possible to fix this myself, and if not how long would it take for someone to fix it. Oh, and whats wrong too.

I have a little bit of experience with computers but not much, so anything too complicated I probably wouldn't be able to fix it myself.I think malware maybe a problem . Go Here
Follow the directions and post the three required logs and a malware specialist will have a look.
I might be wrong, but I expect you'll find some problems.
Eliminate any malware problems and we'll look at overheating, if the problem persists.