Here's a good link for what I'm describing:
http://www.tapr.org/tapr/html/Fcfa.html
Seems like you could do the oppisite since the CF cards have IDE controllers, but I have yet to find an actual adapter...
Here's some other good links, but no direct CF adapter...yet...
http://www.tjotala.com/hardware/stor...ck/default.htm
http://www.aemmenet.ch/Publikationen/CFtoIDEpinout.html
Still looking...might experiment...