I've got 2 questions. First, is about RAM. Will the quality be the same if I buy it on www.canadaram.com, for example? Is it cheap? I don't know very much about all those things... And my second question is about router... I plan to have a iMAc in my bedroom, and the PC is in the living room... SO, i'm asking myself if it would be better (speed, download, upload, etc) to go wired OR to go wireless... And if i go wireless, does it worth the pain to buy, for exemple, the Airport Extreme Station? will it be the same as if i used wires? and also, i'm planning to buy an external hard drive for my music and Time Machine... Would it be better to plug it into the iMac or would it be okay to have it wireless? And LAST question... If i go with a wired solution, is a 54 mgbs wireless router the same wired speed as a 108 mgb?? thanks for your answers!