Ok, I'm ready to buy and switch. Can anyone tell me how difficult it is to upgrade the internal DIMM? Does it void the warranty? How about installing the internal bluetooth module? I'm ready, but I'm just battling paying the RAM ransom. $200 to go from stock 256Mb to 512MB single DIMM. Come on... I'll change this myself if I can do it without voiding the warranty or breaking something. Any info out there appreciated.