First let's see if it shows up as a block device. Try
Thsi should list all your drives and the partitions on them. Nornmally your on-board drive controllers will list the drives as hda/hdb, hdc/hdd, so you should look for something other than these in the output of your fdisk command.
If you can see what you believe to be the pcmcia drive, check to see that it is partitioned and formatted.
Post some results of your output in this forum if you still cat get it going.
Cheers,
DMc