Id say go for 64bit. Drivers arent as scarce as some say, at least not now. Plus drivers are more and more common for 64bit. On the otherhand, it is a major concern to be sure hardware works so of course youd want to be sure there are first. Graphics cards will run fine in 64 as well as track IR. What joystick do you have? Vista/7 will likely find the drivers for your joysticks without you having to install another set of drivers to get them running. In fact, it is rare in general to not have the OS find drivers and install them for you. TrackIR wasnt automatic, but loading the drivers off the disc/download worked fine (as long as the TrackIR USB wasnt plugged in at the time!). Overall, I havent had any problems finding drivers for 64bit, even a year ago. Plus, newer devices you add will almost certainly be available with 64bit. And if you do get 64bit, and your MOBO can handle it, treat yourself to some extra RAM too!