Netsight MIB? to identify wireless controller

Userlevel 2
We run Netsight 6.3 and have snmp polling working for an Aruba controller. So the controller shows up as an active / green icon in the netsight console. The Device type, however, is listed as unknown. I downloaded the Aruba mibs from their website and put them in the directory on the netsight server. But I'm not sure what to do next. How do I associate the device that's already in netsight via snmp, how to I "tell it" to use the Aruba mib so that netsight displays the device type and we could get information from the mibs? I'm not sure how that interacts?