I had a similar problem with the same wireless card. What I suggest is next:
Remove all the drivers from your pocket Pc. Although you should be able to delete them manually, I didn't manage to do it so I had to do Hard reset after backup. Of couse it did delete all the drivers.
Upon your PPC has no drivers, install Intersil drivers. You can download from here
http://ppcworld.home.comcast.net/do...EXEWinCE300.exe. When the installing process has finished reset your machine. Afterwards introduce the CF Card, then it will appear a box message telling that the card is not being recognised. Delete that message and tap PRISMNDS.DLL, press enter and it should be working (if so a red box will appear in right hand side corner of your PDA)
Finally, is strongly recomended to change the drivers and use intersil's as they are much better. You can even switch on/off the radio without disconnet the card, as well as they work with most of the sniffers and sccanners in the market.
Regards