Can't Add Printer, box is empty
I am trying to add a printer to my computer.
I go to the Print and Scan utility, click the '+', and the Add Printer box pops up.
My Default option is empty, grayed out, I can't manually add anything to it.
My other options are Fax, IP, and Windows.
Neither one of my wireless printers are detected on any of these headings. My "Print Sharing" option is enabled. The printer is online, I can print just fine from my PC.
I also tried connecting the printer to my Mac via USB and still it wasn't detected.
All my software is updated, including drivers.
I tried calling Apple and they want me to pay $50 to have my computer print. I have spent four hours online with no success. I am about 5 seconds away from throwing my MacBook Air out the window, or ripping my hair out.
Can somebody help?
MacBook Air, Mac OS X (10.7.4)