Here are the instructions that got me through this.
Good luck.
For your issues with setting up the Deskjet 6980 printer to your network
I would recommend the following steps. These steps are based on a
process you would use if the driver installation has already been run
through on the Mac.
If you want to utilize the printers wireless functions disconnect the
ethernet cable from the printer and the air port.
Reset the printer buy holding the report (check mark) button down.
While holding the report (check mark) button down press and release the
cancel (x) button three times then release the report (check mark)
button. Once all the lights except the power are off turn the power off
(this may take a minute). Wait for one minute then turn the printer
back on. While the lights are flashing follow the steps numbered below.
1. Ensure the blue radio light come on the printer then click on the
airport icon (on the top menu bar), select hpsetup
2. Once connected to hpsetup, Print the network configuration page from
the printer again (press and release the button with the check mark).
3. Open Safari (should say cannot open page), enter the printer's IP
Address (line 7 with the periods) into the address bar, hit return. An
HP site should open (this is the embedded web server on the printer).
* NOTE * If you do not have the printers report page with the IP address
on it simply press and release the report (check mark) button and it
will print out.
4. Select the Networking tab. On the left side of the window (under
CONNECTIONS), select Wireless (802.11)
5. Click on Start Wizard.
6. Select the network name from the drop down list, click next.
7. If there is NO WEP encryption, continue to step 8. If there is WEP
encryption, enter the key (You must know this key. If you do not contact
Apple to get it reset).
8. Click Finish, the printer's wireless and network lights should blink.
9. At the top of the screen click on the word Safari and then click quit
Safari. Once Safari closes click on the airport icon and switch back to
your network name. You may be prompted for a password.
10. At the top of the screen click on GO then APPLICATIONS. Next double
click on TextEdit. type any thing in this windows and then click on
FILE then PRINT. Ensure the Deskjet 6900 series is the printer listed
and then click on PRINT.
The printer should print the TextEdit words you typed in.
Macbook Pro Mac OS X (10.4.6)