None of these things are really different in OSX. Lots of updates, lots of reboots, admin rights needed to do some things (not that you should have a problem saving on C:\ on a home machine anyway). I've never owned a Mac Pro so not sure what the PCI slots are like, but you have far less compatible hardware available and I've never really had much of a problem with the PC anyway, maybe swapping a card slot once or twice but you don't need to do it again!Update this, reboot that, change PCI slots as there's a conflict, only administrators of this computer can save to the C:\, and I just can't be doing with it at home.