How to change the wireless network on an HP C4780 printer?

I have a HP C4780 printer. I had it previously set up to a wireless network, and can not figure out how to set it up to our new network. I cannot find the printers cd disk, so if that is needed to set this up could you also give me a place to either buy a new disk or re download it online. Thanks.How to change the wireless network on an HP C4780 printer?
Compare settings on the routers.How to change the wireless network on an HP C4780 printer?
http://h10025.www1.hp.com/ewfrf/wc/softwareCategory?product=3794615%26amp;lc=en%26amp;cc=us%26amp;dlc=en%26amp;lang=en%26amp;cc=us ----%26gt; Website to download the printer driver



Is the new network you're connecting the printer to wireless also? You should be able to set up the printer once you download the driver(s) for it. Once the driver is downloaded go to your ';printer %26amp; faxes'; folder then use the ';Setup Wizard'; and follow the instructions. Your computer should recognize the printer once the driver is downloaded.