Cups printing

Hi, I have a RedHat server, with Cups installed and a parallel printer attached to it. It prints OK. The IPTABLE has ports: 515,630,631 and 161 open for the network. The queue is set to default and shared. I have tried unsuccessfully to configure printing from a Pro 9.3 up-todate. Yast | Hardware | printer | 1. Listening to CUPS servers to provide access to remote queues. (change) 2. Port for listening to remote CUPS servers is open on EXT, INT. (change) 3. Listen to IPP broadcasts with in select address the address of the server. 4. Open port in firewall is check on. Any suggestion in what to look for? -- Thanks http://www.911networks.com