OH! Cuty Suzuki!! Perform a piledriver on me baby!
Big Byte: I can provide you with an import converter cartridge, of the rare MegaKey type, or just a simple port extensor. You have to find out which method is best suited for your game and system. If the game has no country lockup hardware inside, a port extensor would do just fine.
Then again, if you have a PAL megadrive you might be needing a Megakey. These are rare and quite expensive today! but I'm selling teh few left that I have for a decent ammount of cash, no inane eBay price (last eBayed Megakey 2 I saw, that was mine, went for 130 dollars!)
PM me if you want!