I would probably just go ahead and buy MS Office for the Mac, though there is a new version coming out soon which promises to be much better than the current 4 year old version.

If you are a student or teacher, there is a version for $129, regular version for $339 (amazon). You might also check your university's store, since they often times have much better discounts. My university had a site license and sold us the media (CD) for $10 for Office.