Iso Problem

I got the Eternal Champions CD iso, and it wont run. I ran it under wgens140b and nothing happened, and when i opened it in kega0.04b its said "BIOS NOT FOUND : Please configure USA Bios in Options->Set Confic-> Sega CD. WHAT AM I SUPPOSED TO DO ABOUT THAT???!!???
are there any SCD emulators out there that you can hide layers and such.

i got the game to work but why is the game lagging so horribly