Originally posted by djpoet:
were am i suppost to put the chd file to make it work
I can think of numerous faintly ribald responses to the above, but I think the most important thing is that you're in the wrong place.

This is the MacMAME message board, which is why there is a large MacMAME logo in the top left-hand corner of the page. If you are using a version of MAME that isn't for Apple Macs, then you really need to look elsewhere. www.mame.net for example.

That said, Brad's original comment (i.e. read the instructions which came with the MAME application, whatever flavour it may be) still holds, and is probably more likely to be useful than posting plaintive messages on discussion fora.