Hello jomon jose;
The old C2D CPUs are 2 generations out of date now.
You should be looking for a Lenovo with a Core i3/i5/i7 CPU.
Here is a nice deal on a Lenovo IdeaPad Y470 14-inch laptop with 2nd generation Intel Core i5 Sandy Bridge CPU $679
Core i5 2410M CPU, 4GB RAM, 500GB HDD, DVD burner, 14" 1366x768 LCD w/ GT 550M grapics.
SRS Premium Sound and JBL speakers, Wifi & Bluetooth 3.0