Thanks - These are very helpful responses. My employer runs AutoCAD LT on a windows platform. I'm looking into using Boot Camp to run windows off of my iMAC ('09 model). I'm concerned that my iMAC may be a bit outdated to perform well in this situation as it can only support Windows 7.1. I'm torn between getting a new computer and whether it should be a PC or if I can still operate in MAC with a newer system that can partition and handle the newest Windows OS. Apologies if I've ventured into MAC forum territory at this point.