PLEASE help me to get Leopard to see my HP over the network

Question

Sigh..... I still cannot get this to work. Does anyone know of any way to get my PB G4 with 10.5.1 to see my HP Photosmart C7280 over my network so it will install properly? Oh, and yes, I would like to be able to use the full feature set that I paid for, not just basic print.
Here is my setup: I have the C7280 connected to my wireless router (Zyxel HW660) via ethernet connection and my network accessed by my computers. I have my iMac (running 10.4.11 and 3 XP machines connected and working properly with the C7280 via wireless connection.
Here is what I have done.
Archive/Install Leopard again today
Uninstalled/reinstalled full HP software for 10.5 from HP site downloaded today.
Entered IP address of printer into Safari and it sees it fine and gives me the status info
pinged the IP address of printer and it responds
Tried to manually add the printer using same IP address and it doesn't find it.
connected the C7280 and my PB via direct ethernet connection and it sees the C7280 fine through a Bonjour connection.
What else can I do? If there was a problem with Leopard and my router, wouldn't it be an all around problem? I can connect to internet, share folders, etc all on the network so don't think that should be a problem. The fact that the C7280 can be "seen" via direct ethernet connection means that it can communicate with the C7280 software and finally, since I can ping it and get status via IP address in Safari means the connection is there.
As soon as I was able to connect to the C7280 via direct ethernet connection, HP told me it was an issue with Apple. HP Mac Architect are you out there?
Can anyone help!! Thanks! PS Sorry, I know post long, but wanted to be as complete as possible.

Answer 1

I'm not sure if this will help you, but I have an HP 2200d Laserjet attached to my SMC 4 port wireless router BUT via the router's USB port. Anyway I couldn't get it to print in Leopard on my G5 whereas my other computers on the network (a B&W with Tiger, an iBook G3 with Panther and an XP PC) saw it and could print to it without any problems. The G5 only experienced problems printing to it once I upgraded to Leopard via archive and install. The original setup in Tiger on the G5 went missing once I upgraded to Leopard so I had to set up the configuration again. Here's what helped me:
1) Add a new printer in the System Preferences > Print and Fax
2) Choose IP
3) Now for me, under Protocol I chose LPD, but you may have to choose IPP or HP Jetdirect
4) For Address type in your printer's IP address
5) Queue type in LPT1
6) Name type in whatever you want to call your printer
7) Now this next step is what made my printer work under Leopard (in Tiger it was blank): For Location type in LPT1
8) For Print Using choose "Select a driver to use...", find your driver, install it and Leopard may start printing to it
This worked for me, but my router has a USB port. Checking the other IP set ups, they look similar to the LPD set up. I hope this helps.