HP Laserjet 4 Plus with JetDirect

I just install my Powerbook g4 to Tiger. I have problem with printing to my HP 4 Plus via IP. I am using airport extreme connect directly to Dlink router. I do not have problem with internet. My printer ip address is 192.168.0.105. My Powerbook is 192.168.0.101. I set up to print thru the IPP and JetDirect. but when i try to print it kept saying that cannot connect to port. Port Busy. I know the printer work via IP because on my Dell workstation it print out fine. Can any one have any suggestion. PLEASE HELP, i am going nuts for a week already, calling HP and they said they dont support. I went to mac support for Tiger and they said that HP 4 Driver included. HELP!