i installed snow leopard, the GM version, and after getting nice and settled i wanted to install windows 7, in bootcamp. so i create the partition, and then thats the end of it. none of the start up buttons will work, i tried holding down the X button while the mac starts up, but nothing will happen. the apple logo doesn't show up either. right now, i booted off of ubuntu, and i'm on firefox. it seems the buttons don't work and i don't know why. also, when i put in the windows 7 dvd, it just read: 1. 2. choose cd-rom to boot up from: or something like that. what do i do?