As for printers i am troubled wether and how it is possible to setup an network printer.
it's not possible. And only few printer drivers (old ones) are available.
Don't expect to find the features you'd get with Linux, MacOS or Windows, MorphOS is a hobby OS, for amiga fanatics and curious hobbyists.
Of course its possible, just dont expect any printer to work. Most latest Brother printers are working, as they provide an LaserJet Emulations. Also Postscript printers are working. Several other printer support emulations. So if you want to support those companies, use their printers and not those GDI shit. Anyone tries to avoid x86, but for external hardware they buy cheapest shit and expect compatiblity everywhere.
Any yes its not possible for a small OS to support any printer out there, especially when hardware companies aren't willing to share any information about the hardware they sell. Postscript is and was always the best choice to be able to get it to run everywhere. That's known for ages.
Don't blame MorphOS developers for not supporting hardware, blame hardware developers for not allowing external programmer to provide drivers. How write a driver without any knowledge on the printer and even with docs how to create and test without hardware. Surely noone is able to buy and store all hardware needed to support it.
I am using two printers right now with MorphOS. One by using USB/Network connection and one by network only, without having any problems.
The network printing package is available on http://www.geit.de/eng_index.html
inside the additional section.