network printing

I created a simple app which prints some stuff, well everything worked well(for me), but when it was tried out on a network all the printer did was making noise(this was reported to me I can''t test it out, as i don''t have a print server available or even a network). So my question is do I have something special to do if the printer is on a network? Oh I think the network is a mix of nt4/2k machines and the printer works when printing with other apps. When I use my local printer everything works fine. Oh Description what the app does: calls to StartDoc and StartPage(so banding support is handled automatically if required) Draw a few lines and write some text; EndPage/Doc The app does a little more normally like Scaling etc but I commented all that out hunting for the reason...