Hello,
It is possible that OS X won't see the Asante talk bridge. Couple things to check...
-- Is the Asante bridge running IP? If so, can you ping it? HP Jet directs do use IP, and you can telnet into them. I have not used the Asante bridge, so am not sure.
-- Did you enable Appletalk in OS X Networking? Go check the networking control panel, and make sure Appletalk is active on your active network interface. I believe it is off by default. Make sure you are in the proper zone and so forth.
Let us know if this works.
Christian