Toshiba Satellite A200-1m8

Hello people...
I now have a Toshiba Satellite A200-1m8 and i want to upgrade it..
It come with an Intel Core2Duo T7100 (1.8GHz)
http://ark.intel.com/products/29759/Intel-Core2-Duo-Pro...

And this is my problem..i have already max my RAM (4gb installed) but i want a better performance in my laptop....

Is a Intel Core2Duo T8100 or T9600 a good choice for an upgrade?
Is the socket compatible with these cpus?
Will it need any further upgrade (cooling is already upgraded) ??

Thanks in advance...