Thanks, the link helped me out.
I needed to DL & install the AMD Catalyst™ - Rage Performance Driver
& game works fine now (though my Graphics Card is on the low end performance-wise).
I DL'd the AMD Catalyst™ - Rage Performance Driver, then proceeded to run it; after it installed, it then asked to install the Catalyst Install Manager (which I did). Why the double installation & do I need both?