Originally Posted by lrs421
I've seen it work on a 64bit machines as well but a few users on XDA forums have pointed out issues on these machines and recommended using a 32bit machine when possible. My machine is also heavily tweaked and may be contributing to the issues I've been experiencing, my wifes netbook is practically stock and it works well.
[HOWTO] Update to JH7 using Kies Mini (USA) - xda-developers
It works on my wife's laptop and it's running 64bit Vista.