kureyon - Right you are. For short money I could buy another smaller, SATA hard drive and dual, tri or quad boot a number of Linux based OS's and just change the drive out when I need Windows. If I need files on the Windows drive while using one of the Linux distros I can use the Thermaltake Black-X eSATA thing to attach my Windows 7 Pro-64 drive (so long as that distro works with my eSATA connection). Then I could do just as I did with my Vista Ult 64 to clean Win 7 Pro 64 change. Tear things to pieces to try and find evry little possibility and way to do things then wipe clean and re-install.
I think that's what I'll do. New small (320GB) drive and Ubuntu, opensuse, Fedora and maybe one more. Then I can give all the 64-bit options a try, wipe the drive and go to 32-bit if I experience problems (which seems likely from what I've been told here). With the new drive there is no concern for bleed over to Windows.

I should fdisk, partition and format all in ext4, I assume?

Anyone aware of problems with multiboot setups with any of the distros? Can my multiboot options include both 64 and 32 bit options? If Windows can I assume the Linux distros can (only one is running at a time and doesn't care about the others).
Any problems with reading from an NTFS formated Windows 7 64 bit drive with the 32 bit Linux distros?
Thanks again to everyone who contributed to this thread!

David