Paradox 7 doesn't find network printer under Window 2000 Pro


I use Paradox 7 on a PC running under Window 2000 Professionnal.
Since this morning, every time I try to print something, an error message
explains to me (in french) that no printer is found or Windows can not
I can print from others softwares (word, Excel, Paradox 9...).
I can print on a local printer, but not on one of our network.

Someone can help me?

Laurent Constandache