Hello, I am planning to purchase a Mac in order to replace a home built Windows based PC. I am by no means a heavy gamer, but would to still be able to play a couple of not especially graphics intensive games such as Counter Strike: Source and Guild Wars. If I were to add 1 GB of RAM to the 1.66 GHz Mac Mini would the games play smoothly? Also, would I need to purchase Parallels and/or Boot Camp (w/ Windows) or something I read about before called Crossover? Thanks for the help!