If you are using the AGP version of this card, you may specifically need the "AGP Hotfix" version of the driver, which is often found on third-party repositories like DriverIdentifier if the standard installer fails to detect the card.

(Version 8.49) that is explicitly compatible with Windows XP.

the executable. If it's a self-extracting file, it will typically extract to C:\DELL\DRIVERS\ or a similar temporary folder. Launch Setup.exe from the extracted folder.

If you are using a Dell desktop (like an OptiPlex or Vostro), Dell provides a specific AMD Radeon HD 2400 PRO Graphics Driver

and restart your computer when prompted to complete the installation.