1) I have a microsoft optical mouse, like 3 months old, i'm getting a weird thing when i use it on the mac. When i move the mouse slowly, the cursor moves slower. when i move it faster, it jumps fast. Is this how macs work? I hope not, it's nothing like windows. Or do i have to install some drivers? How do i install drivers on a mac, i'm a total noob! Just got a mini today! 2) I have ram that i think will work for the mini. I bought it a year and a half ago for a 2.6 ghz pc. It's the same specs I believe, and it has 333 written on it. I doubt it's high density cause it was the cheapest i bought at compusa. How would i know?