Ok, just noticed the Radeon Card....
Downgrade your drivers to one of the following :
catalist 3.7
Catalist 3.6
Catalist 2.6
Catalist 2.3
then go into your SFC 3 game directory and find the SFC3.exe
right click on the file and select properties..
click on compatibility tab at top
make sure nothing has a checkmark in it...
click OK
run game to see if this works.. if not, then go back into the Compatibility tab...
put a checkmark in "Disable Visual Themes" and click OK
Try game..
if game still does not work, then try a different video driver.. make sure to reset your color settings back to 16 bit.. once you find that game is working.. try raising your desktop color lever first to 24 bit then to 32 bit.. if problems occue .. revert to a lower color setting...
Hope that this information helps...