Using netgear ps111w with third party card?

Hi. I need help. I have a netgear ps111w printer server box which works well on a wired network using xp. I want to convert to wireless, the manual says I should use a MA401 card, which I don't have. I've tried using a netgear wg511 and a belkin F5D6020 cards, but without success. Has anybody found a way of using another card with this unit? Thanks, Simon