Hello:
Please reference my previous posts in my thread, titled "The EPIC legacy of the Radeon IGP 320M / 340M / 345M and related chips out there...."
The information you need specifically can be found on this page.
The EPIC legacy of the Radeon IGP 320M / 340M / 345M and related chips out there
Post # 154.
Your system should also be compatible with the same ATi GART (AGP Bus driver) from HP because the chipsets use the same interfaces in most notebook designs that use the Radeon IGP 3xxM chips as a northbridge.
It is important that you clean out your system with drivercleaner Pro AFTER you unistall them through the Add/Remove Programs applet in Windows XP Control Panel.
The Catalyst Mobility 5.13b does not need to be modded, and has the correct INF information to provide full software support for OpenGL and DirectX. However, there have been reports where the package will not install on its own, so you will need to follow the instructions regarding how to "manually install" a driver using device manager.
Good luck, and take care.
- Randomness