you'll be hard pressed. the card was created with the purpose of routerOS in mind. You would be better off getting a card from another vendor for your windows 7 machine
Sorry for resurrecting such an old thread but I completely disagree with this last statement.
I feel its only right for Mikrotik users to expect to get what is advertised and in the case of the rb44ge mikrotik clearly states that it works with windows. In practice they do not provide a driver and the generic qualcomm/atheros 8131 chip drivers are not suitable as in my case they keep bsod'ing my machine whenever i try to use the card and mikrotik has not replied to my support request.