I have XP Pro 64 bit as my OS, and SW 2007-2008 student license. I installed the program but it never asked whether I wanted to install 32 bit or 64 bit version. I don't recall that being an option when I purchased the software either. Is it possible to run SW student license in 64 bit mode? How do I install that, or how do I tell which mode is already installed? Any help appreciated.