[newbie] Print command

[mcoady]

With Mandrake 7 when I try to print a specific file with the lpr command I get the 
message: printer unknown.

Yet the installed printer - a HP Laserjet 4L - prints just fine within WordPerfect.

And the command # printtool reveals that that printer is operating at lp0.

Is there some further configuration I have to do to get the lpr command to work? 

Thanks for any suggestions.

Michael Coady