Hi themaker,Welcome to the forums down load and install the vista driver your card has now become "legacy"
this is taken from the AMD website
Note: AMD’s DirectX 9 ATI Radeon graphics accelerators are not officially supported under Windows 7. If the user chooses to, they can install the ATI Catalyst Windows Vista graphics driver under Windows 7. Please be aware that none of the new Windows 7 graphics driver (WDDM 1.1) features are supported (as the Windows Vista level graphics driver is limited to WDDM 1.0 level support). Using the ATI Catalyst Windows Vista driver under Windows 7 is not officially supported by AMD, and as such AMD will not provide any form of customer support for users running in this configuration
Any customers using a combination of a ATI Radeon™ HD 2000 Series, ATI Radeon™ HD 3000 Series, or ATI Radeon™ HD 4000 Series product with any of the legacy products listed above in a single PC system must use the ATI Catalyst 9.3 or earlier driver. All future ATI Catalyst™ releases made available past the ATI Catalyst™ 9.3 release will not include support for the legacy products listed above or any of the features associated with those legacy products.
AMD may periodically provide Windows XP and Windows Vista driver updates (for the products listed above) for critical fixes only. No new features will be provided in future driver updates. The Linux ATI Catalyst™ driver will only be supported in Linux distributions prior to February 2009 for the legacy products listed above
ATI Catalyst Sorry I forgot the driver link Do not download the full suite just download the WDM package