You may always try a manual configuration. First off, you will need to find out if the computers in your home network can ping the Printer's IP Address. You may locate the IP Address from printer itself by printing the configuration page, find out if the Network Key(very impt.) is also correct from the print out page. If that's a hassle for you, install AdvancedIP Scanner, which will give you all the IP/MAC Addresses of all network devices=> Advanced IP Scanner 1.5 (Free) - Fast and easy-to-use multithreaded IP scanner for Windows which lets you have all of information about network computers in a few seconds.
Open up a command prompt from any computers in your network and type ping + the printers IP address for ex. ping 192.168.1.50 (your IP will be different) then press enter. If you're able to ping the printer, next thing to do is access the printer's IP thru a Web browser => http://192.168.1.50
(an example only) just to make sure that it communicates in your network.
Next thing to do, get the printer's CD and install the printer software/driver
from each computer and it should detect the printer's IP Address and should install.
Please post your progress.