We've had similar discussions about so-called
driver detective programs here before, and the general consensus is that they are a complete waste of money (
drivers are available from the hardware manufacturer free of charge), plus they don't always identify your hardware correctly, meaning that they will, on occasion, install drivers for devices not present or even never been present on your system.
Use
System Restore to revert your system to its condition prior to you installing and using this program. You should find that the correct drivers have been restored and that your computer should work as before.
The latest driver is available here:
ATI Radeon
Alternatively, you can let AMD detect and download the relevant driver for you:
AMD Driver Autodetect