How can I install a line printer in a linux WS
Printer is locally connected to a remote AIX server

The printer is locally connected, to a remote server?? Doesn't make much sense.

You first need to determine if that printer is shared over the network via LPR or not. If it's not, there's nothing you can do until it IS. After that, just set it up as you would any other printer, except in this case where you'll (probably), choose "lpr" as the print protocol. Check the printer, and see if it's plugged into the AIX box, or into the network...if it's net attached, you can probably set it up to print directly to TCP port 9100.

You don't say what kind of "linux ws" you're running, so we can't give specifics.

Thank u for responding.
The printer is locally connected, to a remote AIX server.
The client is Redhat 6.4 machine

Spell out your words.

And did you read/try/understand anything in the first post? And do you mean RedHat 6.4, or RedHat ENTERPRISE 6?

Printer is not shared over the network via LPR.
We are able to install as a remote printer in AIX and solaris WS.

Linux WS is
RHEL 5.4(Sorry 6.4 was a typing mistake)

Ok...AGAIN...did you read my first response??? If you can't see the printer on the network, you obviously can't print to it remotely. And again, your posts make no sense. You say it's not shared over the network via LPR...then say you were able to install it as a remote printer. They can't both be true...either it's on the network or it's not. How is it connected to AIX and Solaris?

Sorry sir,
WE have a 17 year old IBM line printer locally connected to an old AIX server.
It is possible to print from all AIX W/S in our facilty. Client installation is simple using smitty printers. need to specify just server hostname and printer name.In solaris 9 we installed the same using admintool. Even then solaris is upgraded to 10, printing is possible.

Linux is new to our facility and I am New to LINUX OS. We could easily install other 3 NW printers in Linux. But this remote line printer is still a problem. I was thinking of a smillar way that we have in AIX and Solaris .

If it's connected directly to an AIX server, and you're printing to it from Solaris via a network connection, then the printer is very obviously shared via LPR/LPD. That (was) the most common way of sharing printers between Unix systems years ago, now surpassed by CUPS.
Go into your administration tools, and set up a new printer. When asked how the printer is connected, select the LPD (Line Printer Daemon), and fill in the blanks.

Again, since you're using RedHat Enterprise, you should CALL REDHAT SUPPORT, since you're paying for it with your RedHat Enterprise subscription.