Hi All. I have an HP 762n Pavilion. It a little over two years old. I am interested in upgrading the processor which is P4 at 2.26Ghz 478 pin, 533Mhz FSB. I am pretty sure the chipset is an Intel 845e. Does anyone know the fastest processor I can put in the PC? Thanks in advance. Let me know if you need any add'l specs on my PC.