Hi ... I have this Laptop >>> HP Pavilion dv6308ca Notebook PC --- HP Pavilion DV6308 AMD Turion 64 X2 TL-50 1.6GHz 1GB 120GB DVD±R 15.4" WXGA LAN Firewire GeForce Go 6150 ... ( XP PRO sp3 > its not 64 )... I want to buy more Ram and I know I need DDR 2 -- PC2-5300 -- 200-pin SODIMM What I like to know is my motherboard is a 64bit . I believe I also need 64 bit Rams , yes ? How does it work with 64 bit MB ? Thanks