I had a PC at work that I needed to replace. I picked up a Western Digital 750 gig portable hard drive at Costco two years ago for about $90 and downloaded everything off of the PC that I needed. When I got my new PC at work, I was able to access the files from the WD hard drive without any problems.
I have a 2011 Macbook Pro at home running OS 10.6.8 and Parallels running Windows XP. When I plug the WD into the Mac, it asks if I want to run it as a Mac or PC. I run Microsoft Office on both the Mac and my work PC, although the work PC has a newer version. No problems opening and saving files from one machine to the other.
I would think about running Parallels on the MacBook just in case. You will need a licensed version of a Windows OS to make it run and the software. If you've got all of the original software it shouldn't be a problem. I had to buy a Windows OS because I didn't have an OS disk for my work PC.
NRA Life Member