How do I read my CPAP card in iMac?

Several times a few people on this forum asked me to post the results off my Cpap card. Rudely I ignored. Sorry about that. This morning I tried. However, I do not have an application to read the information.
Does anyone know of a FREE application that will read my Cpap results on an Apple Computer?
Thank you.

SleepyHead - free to DL from the first note on main page here - see "Pugsy's Pointers" tutorial... SHead's the only program that does work with Macs and was designed by a forum member.