I purchased Office 2007 through the Ultimate Steal. I know you are allowed to install it on one desktop and one mobile computer. How about one 32-bit OS and one 64-bit OS? I've got Vista installed on two different desktops (32 and 64) and I was hoping maybe it would be legal that Office could be installed on both as well. I don't want to run into any problems later on by installing and activating it on my 32-bit machine.