This is in response to Linc, Greg, and MrHoffman. Thanks to all.
Apologizes; I thought I had mentioned the set-up earlier in this thread.
1. Yes, the printer is hardwire connected directly to the computer via an ethernet cable, and there is no router (WiFi or otherwise).
2. I'm using airport and base station for wireless internet access. There is no Wi-Fi adaptor to serve as the primary interface in this set-up. However, the base station is connected to a Vonage router for phone service, and the Vonage router is connected to a TimeWarner router (my internet provider). But again, the printer is not physically connected to this set-up. The network DHCP IP address for the WiFi set-up is 192.168.15.5. Although this address was not set manually, it appears to be self-assigned and static becasue if I execute a request to "Renew DHCP Lease" the same DHCP IP address shows up. If I re-boot the Vonage and TimeWarner routers it may assign a new WiFi IP address. But the relevance of that action to solving the printer problem is unclear to me.
3. I will definitely try all the different printer configurations and IP addresses that have been suggested and report back.
4. I'm also curious about the outcome if I disable airport and my internet connection as a diagnostic test. Then configure the printer as the only network interface and see what happens. My rationale for this goes back to an earlier comment I made in this thread that the LaserJet printer works fine with my PowerBook G4 running OS 10.4. In this set-up, there is no intenet connection, and a self-assigned 169.xxx.x.x DHCP IP address presents no problem. With no WiFi interface in this set-up, any possible "confusion" goes out the window.
Now for the second issue I'm dealing with; the shelll prompt on Terminal is showing the "value of the HOSTNAME environment variable" as "LaserJet:~ Kris$".
I. I did not set this value.
II. From Linc, this may be "the result of a reverse lookup on the address of the primary network interface". If so, that would be the hardwire ethernet connection to the LaserJet printer.
III. I've been trying a plethora of commands to extract this shell prompt from Terminal, but no joy.
IV. I suspect this is related to the printer issue?
V. I'd like to extact this shell prompt from Terminal. If anyone has any suggestions re line commands I could try, please advise.
I realize I've opened-up the fire hose full bore here, so for now I'll just focus on the configuration of the IP addresses and see what happens. But if anyong suspects that the Teminal shell prompt "LaserJet:~ Kris$" is relevant and causing a hang-up for my achieving a printer connection, please chime in. If it is, I need to deal with that first. If not, I can deal with it later.
Thanks again for all the comments and suggestion. Cheers.