[G4] Airport Express behavior

[John Lanza]

All:

I hope someone out there can help me with this, since Apple support was 
unable to do so.  I have an Airport Extreme Base Station and an Airport 
Express.  The Airport Extreme and Airport Express are configured as a 
Wireless Distribution System -- the Extreme is the main base station 
and the Express is a remote base station.

Connected to the wireless network is a Powerbook G4 and a PowerMac G4 
(AGP).  Both are running X.3.5, iTunes 4.7, and software update has 
been run on both machines to insure they have the most up-to-date 
versions of all software.  I have checked the preferences settings on 
both machines for iTunes, Network Connect, etc. and they are identical. 
  The rub is that the PowerBook can stream mp3 files to the Airport 
Express with no trouble.  The PowerMac G4, however, can't, although it 
happily accesses the Internet over the Express.  In fact, iTunes on the 
PowerMac doesn't even display the pull-down menu for selecting the 
Airport Express.  The only difference between the two machines is the 
cards -- the PowerMac G4 has a regular Airport Card (802.11b) and the 
PowerBook G4 has an Airport Extreme Card (802.11g).

Since all Apple marketing material states that one can use 802.11b 
cards with Express, I'm at a loss for what could be the problem.  Any 
ideas?

johnl
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"The hardest thing in this world is to live in it."