Is the Printer Wired to the router or WIreless to the router ? ? If it is Wireless, you need to add the MAC Address of the Printer to the Router wireless configuration. You then need to Add the Home Network Name or SSID to the Printer Configuration and also input the Password for your wireless network into the Printer Configuration. And as I mentioned above, the Printer and all the Computers that want to use it need to be in the Same Work Group (Network Name / SSID). You also need to check your Firewall settings as they may have some effect on the results. Can you get to the printer thru other computers that are NOT using Vista ? ? ? ? If you can then it is a problem Vista specific. If not, look at the first set of suggestions.