JV44,..yes you need to get the updated driver for the card. That will help and you should run 32 bit as the Radeon runs better at 32 bit than at 16 bit color depths.
Just remeber to do a de-install of the old driver BEFORE upgrading to the new driver. ATI does a pretty good job of cleaning up. Just run the ATI de-installer in the Add/Remove Programs folder in the Control Panel.
After it is removed, reboot and install the new driver.
AH uses DirectX, not OpenGL.