Hello my pc is 6 years old "HP a1210n " media center originally have a XP but now is working with windows 7 ultimate , i upgarde the harddrive , memory and grafic card , working fine but is getting slow , I was thinking to upgarde the motherboard and cpu like 2 core ...capable to upgrade later for a better precessor , I was walkimg in some stores and thery are deals but still expensive for me , my pc have everything is a ASUS ... AMD 64 ...I open to some suggestions and stores to will but parts ...thanks