What is Folding@Home?

What is Folding@Home?
All I can figure is that it has something to do with GPU's and maybe proteins (although I'd have no clue as to how they fit together). 

[Moderator]

Look Right Above Your Post...

Or clik that link...

That link did not help much. I still don't understand. All I could gain from it is that it runs a program on my computer to somehow help proteins. 

I would like it if someone could give me a simple explaination and tell me how it works.

The program give an algorithm to your GPU/CPU where they work out complex sums.  These algorithms/sums replicate how a protein "folds".  For what protein folding means, you can look up yourself.
The program does not

help proteins.

Hope you join the cause,

Two-Eyes % .....

The program give an algorithm to your GPU/CPU where they work out complex sums.  These algorithms/sums replicate how a protein "folds".  For what protein folding means, you can look up yourself.
The program does not
Hope you join the cause

I am very interested in joining.

But I have a few questions still that would have to be answered first:
1. Will the program always be running, if so will it slow my computer down much? Or can the program be turned on/off as I like?
2. Will it use much internet traffic? I only get 5-7MB monthly so this is important.
3. Does my CPU/GPU need to be a certain speed or can any old PC run the program?

I am very interested in joining.

But I have a few questions still that would have to be answered first:
1. Will the program always be running, if so will it slow my computer down much? Or can the program be turned on/off as I like?

it will always run and will not slow your pc you can pause it if you want to but there is no need to

2. Will it use much internet traffic? I only get 5-7MB monthly so this is important.

it only connects to the net to send back the finished work unit that could take 10 mins

3. Does my CPU/GPU need to be a certain speed or can any old PC run the program?

any old thing mine is 4/5 years of age

hope you join us in the team