Need to update my video card drivers?!! GeForce Fx Go 5200.

I think Im a little bit out of my league here as forstly Im operating a Dell Inspiron 5150 - OLD!!

However bought it from ebay on spec - 3.06 processor - 2 gig ram. Thought this wasnt bad at all.

Anyways long and the short I have tried downloading counterstrike source. When I go to start the game it says video drivers need updating and then after following all the paths available to me and getting no where fast I have finally arrived here in the hope that someone can PLEEEAASE help!

From what I gather - I think my graphics card is GEforce FxGo 5200 which I think is 64m?

Someone please tell me what I can do to update the drivers and do anything really to update my computer!! The only threads I could see about this subject are 5 years old!!