Printing using a network printer

[Bray Mailloux]

With cups installed, I've run the lpadmin command to install a network 
printing but the console returns this error:

Unable to connect to server: connection refused.
I believe its because there is no port open for the printing and 
computer to communicate through. So, my question is how do I open a port 
for cups and get them  to talk?

I'm using an HP laserjet 2200dn with PCL 6.