You can install Linux on your apple and my expierience is that SuSe is the most stable especially if you want to use a dual boot system. SuSe do an "Office Desktop that is already set up to support MS Office 97 and 2000 by using Crossover Office but it is limited and I havent tried this version of Suse on an Apple.
A better bet would surly be Connectix that is designed to run on an Apple. I've no Idea if this will work on a notebook but I can't see any reason why not and on Apple desktops is unbeatable if you want to use MS software.
Connectix was acquired by MS in Jan 2003. Try this link