Just choose a white PCI expansion slot that is open, and available.
You can also use a 64-bit PCI graphics card.http://en.wikipedia.org/wiki/PCI_Local_Bus
Motherboard Chipset, Intel 915GL
[ P/N Intel 82915GL Northbridge, Intel 82801FB (ICH6) Southbridgehttp://en.wikipedia.org/wiki/List_of_intel_chipsets#Southbridge_9xx_and_3.2F4_Series_chipsets http://www.ebay.com/itm/Intel-D915GLVG-D915PLDT-LGA775-Desktop-System-Motherboard-Tested-w-WARRANTY-/130635225256?nma=true&si=YcqpJ%2BiYs0OWv7RdfwwhlEKzn7E%3D&orig_cvip=true&rt=nc&_trksid=p2047675.l2557http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=7091795&CatId=1603
What graphics card are you going to use? Manufacturer and model number.
Do you have the drivers, and software?
(User Interface: Nvidia; Nvidia Control Center, ATI Radeon; ATI Catylst Control Center )
REMEMBER; Install the drivers F-I-R-S-T, then turn the computer off, follow Anti-Static Precautions, and physically install the graphics card.
THE drivers need to be there, (Installed), BEFORE the graphics card is physically installed.
BIOS won't use the drivers until the graphics card is INSTALLED.
[Driver: A small piece of software that allows the Operating System to communicate with a device
The graphics card is the device in question. Windows XP and Windows 7 are two examples of an O/S.
When a device is installed Windows 'breaks it's neck' to find suitable matching drivers.
If THE drivers are Not present, Windows will match up one of it';s THOUSANDS of generic drivers.
This = No ]
For additional questions please post in a Comment.