I got a couple 4GB sticks for Christmas... looking to install them into this 2009 C2D machine. Questions: 1. Can it handle 12 GB total RAM? (came with 4 GB factory) 2. it is really as easy as unscrewing the bottom and popping them straight in? (saw a couple videos) 3. Will it make much of a difference with speed/pinwheel of death? I gotta buy some sticks for my laptop also, as it's slow as molasses, but this is a good start. A computer place down the street wanted to charge me 50 bucks to install; if it's this simple then screw that.