also when you get the adapter, check with building and see if you can find out if it wireless G or wireless N.
wireless N is faster and goes farther distance than G.
The prices of the adapters in today's market is pretty close anyways and a wireless N adapter can access wireless G but not a G adapter connecting to a N signal. you should be able to get one from bestbuy, walmart, radioshack maybe and more....just read the instructions first. Some want the disk and drivers installed first and some say install adapter then run disk.