Finding out your Key

I know for war3 there is...

Is there a program you can download so it can tell you your guild wars key? My pc has a crappy built in graphics card so this game lags for me... I was going to uninstall and play when I have a better PC. I lost the card with the key on it

If all you want to do is play the game on another machine you dont need to add the key again.

Just install the game and use your email and password. The key is already linked to it serverside.

Dunno if there is but if you un install and reinstall for whatever reason
all the account info and game play is kept server side not client side.
Just as long as you remember your login name and pass you don't need the key to reinstall.

Another way is contact support and ask them giving them the relevant info.
Hope it helps.