That is a socket M or PPGA478 processor. Not really worth upgrading, the best you can get is another dual core with 2.8ghz the t9600.
And as IntelEnthusiast say's, you don't typically just replace the processor but the whole MOBO. And most laptops only fit one specific MOBO.
Look at all these mother boards available for Toshiba satellite laptops and notice how the all have a different shape. One size does not fit all. https://www.google.com/#q=toshiba+satellite+motherboard&hl=en&tbo=u&source=univ&tbm=shop&sa=X&ei=6aEeUYG5Gs3oiwLn6YCoCw&sqi=2&ved=0CEYQsxg&bav=on.2,or.r_gc.r_pw.r_qf.&bvm=bv.42553238,d.cGE&fp=92d2134ce937d52&biw=1440&bih=844
If you want a computer that can be upgraded with more than just RAM, HD, WIFI, GPU then you need a desktop solution.