Ok I want to re-install Diablo II but the thing is one of the CD's is scratched and won't read when I try to install it. It gets stuck no matter what I do. My question is, is there anyway I can get this to work?

Also I lost my StarCraft CD - I have two BW CD's but no regular. Anywhere I can download it?

VERY UNLIKELY TO HAPPEN!!!

For your scratched cd, you can try a cd repair kit like Digital innovations skip doctor: http://www.digitalinnovations.com/index.asp

If you don't want to buy a cd repair kit, you can try buffing the cd with a piece of felt.
You also might want to try copying the data off of the cd before you install it and install off of the copy. Sometimes I have had success with that approach when the media was bad.

As for your missing starcraft cd, Look harder You might just want to burn it from a friend who has it. I don't want to post any links where you can download it, but you might try googleing for "starcraft" and "torrent".