how to print

[Zhang Weiwu]

Hello. As a new user I tried to google for documents how to setup 
gnustep for printing with no success yet. Experiments doesn't work. 
e.g.
1) double-click an image in gworkspace to start Preview,
2) select "Print" in Preview bring up a print dialogue that prints to 
"Dummy" printer.
3) Click "Print", the dialog is closed, nothing happens.

I find it seems the only way to print is to click "SAVE" button to 
save it as a postscript and pipe it to lpr in Terminal.app

I have in my case cups configured, so printing from firefox have no 
problem. Where can I get instructions for setting up printing in 
GNUStep?