dial-up to ethernet

["mmissett" <mmissett@cine-med.com>]

Apologies first if this if a very basic and/or stupid 
question, but I have not managed to find 
anything about it in the archives and 
documentation that seems to be working.
  I am running potato on a powerpc (Mac G4) 
and have just changed the computer from  
dial-up to cable internet.  The connection to 
cable is via an ethernet wireless bridge.  As far 
as I can judge, that connection *seems* to be 
up and running properly, but I don't seem to be 
able to access the internet over it.
  I have the feeling that I'm missing something 
really basic here, but I can't seem to figure out 
what it is.
  Any assistance would be *most* appreciated.

Mike