I have a Dell D620. It is a Core Duo T2400 1.83GHz on a socket 479 mPGA. I like to upgrade this processor to a Core 2 Duo T5500 our to a Core 2 Duo T7600 is this possible?

Can I use any mobile processor with a socket 479? 

The graphics is Mobile Intel 945 Express Chipset.

I like to thank you for the answers.