Hi Lara5,
I have just had another look, and it would appear, given the 'P200' that you quoted, that your laptop is a 'Satellite' model - see here:
Toshiba Support - Model Selector
Select (from left to right) 'Portables', 'Satellite' and in the final column scroll down until you see P200. There are actually 2 models here, viz 'P200-ST2061' and 'P200-ST2071'.
Since you stated 'mobile intel 965 express chipset' in your first post, this ties in with the first model, 'P200-ST2061'. However, we need to be absolutely sure so that we can locate the correct driver. The link given by Amplid should help.