Please be aware that the type of integration you are attempting is usually handled directly by the OEM manufacturer with complaint with the FCC regulations as the system must be certified in order to be allowed to use a radio emitting device.
You may take a look at the following link for more information:
In this particular situation what we could advise that you have the latest BIOS and the latest chipset driver in order to allow the wireless be detected and handled by the system.
In case of short range problems you may need to take a look at the antennas but again as this is not supported through this channel there are no recommendations that we could provide I would suggest contact the motherboard support at email@example.com or check their forums at http://intelopenport.hosted.jivesoftware.com/community/tech/desktop/content.
Sorry for the inconvenience.