Help! Keypad doesn't work - I'm stuck!

I am in the process of installing Windows XP on my MacBook. I'm using a DVD that has Windows XP Professional SP2, Windows XP Home SP2, Media Center, Tablet, servers, and a bunch of other microsoft products on it. It is labeled "msdn" on the front.

Anyway, I restarted the MacBook and now it is asking me which one of those I want to run, and I'm trying to choose Windows XP Home SP2 (by pressing "D") but my keypad doesn't work! I tried restarting it and taking the disc out before it loads, but then it tells me there is nothing to boot so insert a disc and press any key to continue, but my keys don't work!

What should I do? I don't want to mess anything up...

Well nevermind, I guess I can't use an msdn DVD... I ended up finding a Windows XP Pro SP2 CD and used that and it works.