Use an Airport Express as a wireless bridge, and plug into the LAN port on that.
Can it be any wireless router?
Use an Airport Express as a wireless bridge, and plug into the LAN port on that.
Get an Airport Express and plug it in upstairs next to your Mac Pro. You can then run an ethernet cable to it and bridge from the AEBS. I do that with mine. My AEBS is in my bedroom, my AE is in the living room.
Just get an airport card for your MacPro...It will be a lot less of a headache.
Should have probably done that when you bought it honestly...
I got back from the Apple store a short time ago with my Mac Pro Airport Extreme card. It was a bit hard to instal in that the two wires were hard to work with in such a small space and the wires being so short. It's hard to get them to "plug" onto the card. I found it easier to plug the card into the socket first and fasten the two screws then secure the wires. Works flawlessly.
Inside the box is the card, warranty and two screws in a packet. There is also a CD for the AEBS but it is not needed if your AEBS is already configured in your network.