I have a new 24" iMac Core 2 Extreme 2.8GHz with 4GB of Memory.. and I also have a copy of Microsoft Windows Vista Ultimate which comes with both a 32-bit install disk and a 64-bit install disk. Anyway, I plan to use Office 2007 with Vista and also play some games. So my question to you is, which is better to install? The 32-bit or the 64-bit version? Thanks in Advance!