Erik:
You should look at this page:

http://www.sandisk.com/tech/oem_design/cf_dc.asp

There are documents referenced here that show how to---

1) Connect a compact flash card to an IDE port.

2) How to adapt compact flash to a PCMCIA adapter.

I think that between these two you may gain some interesting insights in the PCMCIA to IDE interface hookup.

Good Luck
Michael Karas