DKWatson:
You have your buttons spec'd on 7 and 8 which is one from PORTD and one from PORTB respectively. That means having to deal with different ISRs, which is fine and may be the way you wish to handle it.
Ah, thanks, I was totally not aware that the pins were actually grouped like that. Now this makes complete sense. Thanks for taking the time, I will read up on this a bit more. Most of my projects I build using the starter guide and I was even able to create a laser-game set just expanding on the samples given. But this is completely new to me.