I have never been into games much but my friend bugged me into buying one to use on my iMac G5 20". I poked around this forum and decided to buy Call of Duty. All I can say is wow! Games have come a long way since I had a console (Sega something or other circa early 90's). I installed it Thursday night and spent 4 hours playing. My arms felt crippled after that. It felt like an hour. Graphics and speed are awesome. I just installed another 512 MB stick to bring me to 1GB RAM; wonder how that will effect the game. A few questions. Any recommendations on where I can find a good place to learn how to really play this? The manual description of View controls makes no sense to me. WHat about all the settings options? Why does it need the DVD in the drive to play; can't I enter my serial number somewhere to avoid this hassle? Anything you'd recommend a new player? What game should I buy next?