Hi Grugsberg,
Thanks for providing that screen shot.
You are missing the wireless configuration wizard from the install.
It didn't install properly.
I would start over again.
Reset the printer.
Disconnect the USB cable.
Uninstall the software from the CD.
Go to start, computer, right click the CD and open, then double click on uninstall from here not from the screen shot uninstall. This way will remove the registry files also.
I would turn off all start up programs to make sure there isn't something blocking the printer from fully installing.
Click on start, in the search box type in run, enter, then type in msconfig, click OK.
Click the Services tab.
Click to select the Hide All Microsoft Services check box.
Click Disable All, and then click OK.
Then click on the start up tab at the top.
Click on disable all.
Reboot the computer. Restart the router one more time.
Temporarily turn off any Antivirus software.
Run the software again but don't connect the USB cable until prompted for the wireless setup.
Then go back into msconfig and enable the All Microsoft Services and enable all on the start up tab.
Turn the Antivirus software back on again.
Let me know if that worked out alright.
Thank You.