Can't disable integrated graphics through BIOS and activate PCI slot

I just bought a new 8800GT for my computer (A Gateway GT5228 with an integrated GeForce 6100 chip) and a new power supply. Installing the actual hardware into my case was a breeze but when I put in the CD to install the drivers for the graphics card it would give me a message along the lines of "Could not find any compatible hardware, installation will now exit" In the box came an orange note directed towards people like me with integrated graphics chips that told me to disable the integrated graphics through the BIOS and activate the PCI slot through an option called "Primary Display Adapter". There is no such option on my BIOS menu, the manual doesn't say a thing about it and the company's tech support doesn't help all too much. I've already tried to disable the 6100 through Windows device manager but the installation disc still sees the 6100 there and not 8800Gt that I know I put in the right slot (and connected directly to the new power supply). Is anybody familiar with this BIOS menu? Can anybody tell me which option disables the onboard graphics and activates the PCI-E slot? I'm fairly new to hardware installation and the last thing I want to do is spend hours trying an option in BIOS, restarting seeing that it does nothing repeating that for hours and hours and finally breaking my computer because I disabled the wrong thing.

Here's a picture of my BIOS screen.

This is an image of the Integrated Peripherals screen; there's absolutely nothing that would indicate display output.



I have no clue how to interpret any of this.

I have to leave soon and I won't be back for another eight hours so thanks in advance.

I guess it might be under advanced chipset features, but to be sure, just look through your entire bios and take a look at all the SETTINGS you have for every option in your bios. Look for a setting called PCIE or something like that.
If you don't find it, return to windows and see if you can UNINSTALL the integrated graphics. Maybe look at 'Add or remove programs' window in control panel for the original drivers and get rid of them. Be careful not to erase any drivers that belong to your mobo.

Make sure the pci card is seated properly - you will need to push a button and pull the tab out that sits at the end of the slot (on the motherboard, not the card) to get the card to sit right down.

i have the same problem

There is no option in BIOS, because people fail at life and suck at making computer hardware.

Secondly, i went to uninstall the onboard, and it reinstalled on restart... you disable it and it re-enables....

All the while ignoring the massive monster that my GeForce 250GTS is...

Why couldn't it just work for once, damn computer is nothing but a heap of very expensive ***.