Greetings from a heretofore silent MacRumors enthusiast! I've been reading since I got my first MBP 2 years ago and have always found you folks to have reliable answers to my questions, but on this one I think I'm missing the specific answer I need. My new 27" i7 iMac is arriving this week, and I'm trying to get everything lined up for the great awakening. Here's my situation: My wife will use this beauty for her work during the day, and will need to use a resource-intensive, windoze-specific genomic software program that is 32-bit only. I of course will also be on it, using mostly OS X but needing to run some windoze-specific applications myself, and I can go 64-bit. I *do* have VMware Fusion 3.0 ready to go, but I'd prefer to use it with the BootCamp partitions instead of as virtual machines because this is better for my backup situation. Also, a bootable external HDD is not an option at the moment, so there's that. So, to my question: Can I triple-boot with Win7 32-bit and 64-bit? I've read this guide but it's for XP and Vista. I have reason to believe it's possible with adequate preparation, using Disk Utility to partition the disk right away and going from there. I'm just worried about unforeseen issues. I'm thinking if it works I will somehow boot into windows and then somehow be given the option of going into 32- or 64-bit. If it doesn't, I guess I might have to go the virtual route for my 64-bit'-ness. Thanks!