ZyXEL has made a 802.1X client available for download to be used with the ZyAIR B client products and their ZyAIR B-1000 AP and the ZyAIR B-2000 Router+AP products.
The client can be downloaded from ZyXELs website, you can find it in their download library.
I have not downloaded and tried the client as my b100 is in the 10w and not used as a client. Is this client the one you use to authenticate or this one is the client manager to manage the card?