Windows 7 64 Bit or 32 Bit on Boot Camp ?

Hey,
I have the 21.5" new iMac and I've decided to dual boot it with my Windows 7.
I'm trying to decide if I should install my 32 Bit version or my 64 Bit version.
I know you have to have 4 GB of memory or more in order to run 64 Bit but isn't 64 Bit REALLY messed up ?
Any help is appreciated.
Thanks.

Hi and welcome to Discussions,
Quite a lot of people have already installed Windows 7 32-bit and 64-bit even without official support from Apple.
The hatter has an ongoing thread full of helpful tips about Windows 7 http://discussions.apple.com/thread.jspa?threadID=1866970&tstart=15
64-bit Windows 7 should be quite fine on your Mac, but as you already know it is only needed if you have more than 4GB RAM and/or 64-bit Windows programs to run.
Regards
Stefan

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http://discussions.apple.com/thread.jspa?messageID=9427806&#9427806
Though to be honest I didn't find it as difficult as this thread implies.
The hardest part for me was successfully burning the ISO disk, cuz I'm dumb. I found "Active ISO" app more useful than Nero. See bottom of this post for some notes on my process.
Benefits of moving from xp sp3 32 bit to win 7 64bit:
All my ram
Both processors
SATA drives now visible and in use (increased transfer times from xp firewire to win 7 sata nearly 10x fold, Seriously. 3GB file transfer test went from 3:35 to 0:35!!!!
Other pleasant surprises:
Printer worked instantly
Local network, no configuration... all my mac show up and even their firewire drives. I can read write to any drive on my network. (Note those drives had been set to allow "windows guests" in system prefs>sharepoints).
OS intuitive. I've never used vista. Went straight from xp and there's little I can't find or get used to.
Adobe Master collection and Office Enterprise loaded with no hickups
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Windows 7 64 Bit or 32 Bit on Boot Camp ?

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