Emulators can't find any games on my cart

I'm having trouble with my Fire Link cart; all the emulators I've installed can't find any games on the cart. Some freeze up, while others don't find the games I've put on there.

I've read somewhere that some carts need to have a file put on them to make them work with some reading systems - I'm probably being a bit dim, but could someone let me know where to find these files, or point out what I might be doing wrong. I'm following the readme files where they exist. The emulators I've tried so far are both Amstrad ones, a couple of Spectum, SNES, NES and Mame.

Cheers,

Paul

Emulators can't find any games on my cart - please help!