In Vista, add a network printer, there's a choice to select a shared printer by name, example: \\computername\printername or add a printer using a TCP/IP address or hostname. If I select shared printer by name and type \\192.168.1.nnn\printersharename I get the message "Windows cannot connect to the printer. Make sure that you have typed the name correctly, and the printer is connected to network." If I type \\computername\printersharename I get the same message. If I select add a printer using a TCP/IP address or hostname I can only type 192.168.1.nnn, it will not take anything else. When I hit next it says it's contacting printer, then detecting TCP/IP Port then I get a message Additional Port Information Required; the device is not found on the network. Be sure that: 1. the device is turned on. 2. The network is connected. 3. The device is properly configured. 4. The address on the previous page is correct. The screen asks for Device Type and Standard and Generic Network Card is already selected. I hit next. Screens says detecting the driver model. Next screen is install the printer driver. I select Eastman Kodak and 5100 AiO and hit next. next screen use the driver that is currently installed (recommended) is already selected. I hit next. Next screen says type a printer name and Kodak 5100 is already in the printer name space, I retype kaio which is the name of the shared printer. Screen says this printer will be installed with the kodak 5100 AiO driver. I hit next. Says installing printer. Next screen say you've successfully added kaio. I hit print a test page and i get the message network connection error, make sure a firewall is not blocking access to the printer. I have uninstalled all of Norton using your link and I have also uninstalled the microsoft security essentials software (or whatever it was called) that I downloaded with your link. That pretty much sums it up. I really don't know what else to do at this point. Thanks for any help.