It will simply be the size of the document is too big for the page. Try to print preview and see if 2 pages will print, or highlight the area to print with your mouse and print only the selected area from the print command. You may also be able to instruct the printer to fit it all on one page but without knowing what you are trying to print it is a bit difficult.
Which program are you printing from? If it's Internet Explorer, try selecting the text and images you want to print, then go to File, Print, and choose Selection where it says Page Range.