Configuring Second Graphics Card-

I am using an old HP LH4 Netserver which has the graphics integrated into the mobo. Unfortunately I do not know the chipset (Is there a sniffer which can find this info?) but the technical data states the resolution is 1024 x 768 x 256 colour.

I want to put a higher spec graphics card in a spare slot to achive better display quality. If I do, should I disable the integrated “card” and if so how?

How do I distinguish between the cards when trying to configure the new one?

Any help much appreciated.