Hi,,,,,, i will show you how to make a poster size 60/80 cm open Photoshop then select the image you want crop it as you want make a new page with size 60/80 cm image make to fit to page if you want outline - make strock.. select all ( cntrl + a) ,left click mouse, strock type want you want then select printer we are i am using HP designjet 510 go to print settings custome settings select mm- 850/650 print quality- noraml optimize for - images go to finishing orientation - select landscapeok check the view .. print. enjoy.................................. byeeeeeeeeee