not really a computer problem (or i would ask myself LOL) but more of a Microsoft office 2010 problem.

I am trying to create a couple of basic posters, but want them to look nice. On the screen they look great, all centralized etc..... BUT when i print them they are always offset. In other words, there is for example a 3 cm gap on the left, but a 5 cm one on the right..yet on screen as i say, everything seems fine.

I have tried different posters in Word and Powerpoint and on different computers and printers. I must be doing something, OR missing something completely ...any ideas anyone ???