Onboard/integrated video card question?

i'm planning on buying a motherboard, here's the thing: a motherboard with onboard video card which was geforce 6100 is cheaper than a motherboard without an onboard video card.....so now i wanna get the cheaper one and then just buy a better seperate video card later...would installing this seperate video card mess up my system 'cause the mobo already has an onboard one??? how would i disable the onboard video card? would disabling it be problematic?...i heard i shouldn't for example install a seperate nvidia video card if the mobo's onboard is also nvidia?|||There won't be any problem installing another video card with the integrated one, as long as you realize you can only use one of them. Disabling the onboard video card is easy. Once you install the new one, just go into your BIOS and select which video card you want to use. So buy the better board and upgrade your card later.|||No it will be fine. You can disable the onboard if it comes to that.|||You can disable the onboard video card in bios setup.|||No, I have done this when the inboard card quit