I'm sorry about the issue. Can you please click on the Apple logo / menu at the top, then click on About this Mac, then tell me your Mac OS X version, i.e., 10.6, 10.7, 10.8, etc.?
Please reply at the box below. Thank you,
On the printer, touch the Right Arrow icon, and then touch option Network.
Touch option Wireless
Then touch option Wireless Setup Wizard, and then touch OK.
Touch the name of your wireless network name, and follow the steps there in order to connect it.
Once that is successful, then see if you can print from the computer now.
Please reply at the box below to continue. Thank you,