xmd/xmf cd image

this is a file type i’ve never come across before, and google isn’t being much help. any idea what app to use to read an image like this?
tried alcohol, ultraiso, magiciso to no avail. even imgburn doesn’t recognize it…
thanks!
Answer #1
http://filext.com/file-extension/XMD
Answer #2
gosh, thanks mister! that was so helpful!
(that remark was facetious)
Answer #3
I just changed the extension from .xmf to .nrg, and daemon tools did the job.