The one thing the really exacerbates it for me is stupid notebooks. I find I end up being much more hunched over, and having my wrists in awkward positions vs. a normal keyboard, monitor at a reasonable distance, etc.

Also, I stopped playing guitar for the most part :( because there's just too much overlap in muscles (I guess).

Really, the only answer that works long term though, it just get off the computer. If you're having withdrawl problems (I certainly did) order a whole load of good [computer] books.