Printing Informix reports to HP Laser Jet printers.

We recently purchased the HP IIIsi printer. I am printing the reports using the lp command which works fine and I am using the DBPRINT command in script. What is the best way to handle when someone wants to switch from one printer to another? In another word, How and where whould I specify to reset the DBPRINT command? Right now I have the DBPRINT in "dot" script file which then invokes the 4gl program. Thanks in advance. Ruchi.