How to print large images on multiple pages or poster size:
First, Open your large png, gif, jpg file using Windows 7 or Vista Paint.
Select: Print -> Page Setup (Vista and 7), or File -> Page Setup (in XP)
Under Scaling, select Fit to and change the setting to something like “2 by 2 page(s)”
Print the image from Paint, and make sure to select “All Pages”
You can also play with Print Preview to get a size that you need.