Someone posted about that in the iBurst forum very recently, there were some config changes required (if geriatric memory serves), I suggest just paging through the forum & looking at thread titles, alternatively just search for linux & pcmcia in the iBurst forum.
For anyone who is interested, I've recently got the iBurst PCMCIA card working under RedHat 9.0 linux. There were a couple of things I had to tweak to get it working. If anyone is looking for help, I've posted a mini-HOWTO here: