How to figure out if the platform is 32bit or 64bit?

[kjhishere at gmail.com]

I need to know if I'm running on 32bit or 64bit ... so far I haven't
come up with how to get this info via python. sys.platform returns
what python was built on ... but not what the current system is.

I thought platform.uname() or just platform.processor() would have
done it, but python returns an empty string on windows. Any ideas?

Thanks, Ken