If I remember correctly mdk doesn't install the pcmcia-cs drivers, instead it install's a generic set by default when it detect's a pcmcia adapter. That's why you still hear the 2 beeps when you put in your card. However it's not configured for wireless. You also have to have the source of pcmcia-cs installed to compile the linux-wlan-ng package. I tried for a while to get it to run on mdk, but after a couple days I installed slackware and got it running on there no problem. Listed below are the package versions you need to get everything to compile properly.

PCMCIA-CS 3.1.26
linux-wlan-ng 0.1.8 pre13
linux-wlan-ng patch

Install slackware. It's not any harder than mdk to install so don't worry about it. Install the pcmcia-cs drivers like the readme says. Then when you extract the linux-wlan-ng files from the tar, install the patch file. The airsnort readme says howto do that. Then install the linux-wlan-ng package like the readme says. And you should be all set. I'm pretty bad at explaining things so if you want my icq number is 24866574, hehe.

-- ZeroBreak