Moon Child wrote: » Since I have been studying for the MCTS Win 7 cert it seems like forever I will probably still stick with windows 7. It depends what your more comfortable, but since most people still use win 7 or earlier I think windows 7 would probably be better. I use windows 7 all the time so I am more familair with it, I am not sure what windows OS you use the most. I would get certified in the OS you feel most comfortable with.