cannot find .inf to install print server port HP 5600

I am trying to add a print server port for my HP 5600 printer on Win 7.

Go to"print server properties"  select port then "new port type " print server get message 'supply printer inf to instal port monitor intilation information.'

Cannot find INF files on any progrm CD supplied with the printer.

How do I add a 'print server port' to the printer so my Linksys USB printserver. This print server works fine on my other computers on my home network.