I was looking around at newegg this morning and i saw that the memory I had purchased just 5 months ago is down to $140 from $240. I'm thinking about upgrading to Vista 64bit. (By they way I have a Core 2 Duo E6600, 2GB Corsair XMS, 8800GTS, Asus P5B Deluxe.) I was wondering If 4GB of memory...