Running windows 7 pro 64bit
Processor: Intel core i7-4790k 4.0ghz
RAM 16gb

Sorry guys kind of a noob when it comes to this but looking for a little help. When i download Sega games individually i have no issue using fusion to open them. I downloaded the mega drive but when i try to find the file it will not pick it up at all. When i browse it says its not supported file. I tried the Gen emulator to see if i could get it working and still had same issue. Im sure im just missing something simple but can't seem to figure it out. When i download individually it says its a "md file" on the mega drive its a "gen file". Im guessing this is my root issue. Any ideas?