|"You may also need other drivers if you have recently installed WinXP."|
XP doesn't have the drivers built in for most things that first came out after XP was first released, circa 2001, and it doesn't have some of the drivers built in for things made before that.
Whenever you load Windows from a regular Windows CD (or DVD) from scratch, after Setup is finished you must load the drivers for the mboard, particularly the main chipset drivers, in order for Windows to have the proper drivers for and information about your mboard hardware, including it's AGP or PCI-E, ACPI, USB 2.0 if it has it, and hard drive controller support. If you have a generic system and have the CD that came with the mboard, all the necessary drivers are on it. If you load drivers from the web, brand name system builders and mboard makers often DO NOT have the main chipset drivers listed in the downloads for your model - in that case you must go to the maker of the main chipset's web site, get the drivers, and load them.
AMD / ATI no longer updates video software for video chipsets older than one a bit newer than yours - Radeon 9800.
I know from experience that if you ever need to un-install the AMD supplied ATI software for video chipsets older than the Radeon 9800, you may get an error message and NOT be able to un-install it.
If that happens to you, this is the only way I know of to easily fix that problem - search the web for the freeware "Driver Cleaner Pro" , download it, install it , READ the directions, and have it remove all ATI related things from your Windows installation. If your mboard has an AMD (or is older and has an ATI ) main chipset, then you will probably then need to install the AMD (or ATI) main chipset drivers again.
That program can also be used to un-install any installation of ATI software, including the Omega Radeon drivers (see below).
NOTE that if you have the CD that came with the video card that has the video software installation program on it and you install that, or if you go to the card manufacturer's web site and they have the video software to download there, and you install that, you may NOT have the problem of not being able to un-install that software.
A very good alternative to the AMD supplied ATI drivers for the video chipsets older than Radeon 9800 are the Omega Radeon drivers. They have a very good un-install that un-installs EVERYTHING that was installed that is ATI related, and you won't have any problems un-installing the software.
The Omega drivers are fully approved of by AMD / ATI, but support for them is only on the Omegadrivers site.
READ the Readme file for the drivers.
The Omega Radeon drivers also support newer ATI video chipsets, however, I found that they don't support more recent PCI-E chipsets, e.g. the Radeon HD 3xxx series or higher.
He uses mostly standard ATI files, but some are tweaked.
(If your ATI video card has video IN capability - usually it doen't unless it's an AIW card - or if it's an AIW card which has a built in TV tuner, you will need to also load some separately available software for that from the AMD web site, if you want to be able to use those features.)