Sore right hand

For quite some time now my right hand and right pointer finger are pretty sore. It all started when I started spending dozens of hours a week for several weeks straight playing PC games. Even after resting it for a week or so it was still equally as sore. I went to the doctor and he told me it's not carpel tunnel. I asked him "well then what is it?" He said to just rest it. So i rested it for a week, still sore, another week goes by, still sore, rested another week, still just as sore. Anyone else ever had this problem?

What Mike said I get RSI nearly all the time, but it passes by in a day or two.
I think you may be in the wrong place for asking these questions, but if we know the answer then we might as well :)