Thank you for the suggestions. I really appreciate it. Anyway, I found my receipt of my previous cpu hardwares. This are the hardwares:
Intel pentium dual core E5500 2.8Ghz/2mb L2 cache/800fbs/42nm lga775
Elite G31T-M7 S775/C2D/1333MHZ/DDR2 800/PCI-E/V/S/ LAN
KINGSTON 2GB DDR2 PC800 MEMORY...