[X4U] Airport

[Robert]

Have a Mac pro with an airport card. Just after I bought it the  
Airport Extreme 802.11n came out. Apple had a software update to bring  
my card up to 802.11n. It was only a couple of dollars but I didn't  
need it so I didn't do it at the time. I have now purchased an Airport  
extreme 802.11n  and I thought that the software for the upgrade was  
on the CD that came with the airport. How do I know if my airport card  
is 802.11n and if it isn't  where do I find the update to bring my  
card up to 802.11n. Thanks Bob