I´m afraid I don´t have any workaround or other solution.
But, I have the same problem with the wl00-driver on a nordic Jornada 720.
I think it is really bad of HP/Compaq not to fix this during this time. It doesn´t matter if the products are old; people are still using it! (And, it wouldn´t be likely to buy a new product from them if the support is this