Hello everyone - newbie to Macs here. Well, I ordered a new MP with 1gb of ram, and I want to keep the stock ram and add more modules. I want to get at least 8-9gb of ram into the MP in total, so what would be the best way of going about it which would result in the ram operating at its best - getting 6x1gb or 4x2gb? Any help is appreciated. Thank you!