My 2.33Ghz 17" x1600 Macbook Pro has been feeling somewhat sluggish and I think it might be time to perform some upgrades. The 160Gb hard drive is now almost completely full up and I would like to upgrade to a 320-500Gb 7200RPM hard drive. DOes anybody know where I might find a decent deal on one? And I've seen install instructions for a 15" MPB, but would this be any different for the 17"? Should I attempt it if I have little previous experience inside the 'book? I'm also planning on upping the ram to 4GB. Would this be a worthwhile upgrade if I do light gaming (COD2, BF2142, etc.) and photoshop work? Where might I get some decent 667Mhz memory?