Hi lucy8885,
You are most welcome for the previous assistance. I'm sorry that you got hung up during the installation process.
I have included a document on the steps to take when the printer isn't found during a wireless network installation. It has several different methods to try and add your printer wirelessly.
Mac OS X: The All-in-One Is Not Found During Wireless Network Installation in Macintosh OS X
http://h10025.www1.hp.com/ewfrf/wc/document?cc=us&lc=en&dlc=en&docname=c01833641