As Rich Tate sugessted, use NXT's print to HTML file.  This will produce a *.png file and if your program is very long it will be a long skinny image.  If you open this into MS Word or PowerPoint you'll find it will either print to small for your to read or if it is readable it will truncate and not print the end of the program.  Frustrating.  Believe it or not, MS Excel does a very good job of printing the long skinny *.png files without the need to fuss over taking screenshots of each page.  Open the file in Excel using the 'Insert Picture' and select the png file.  Go to print preview and using page setup select "fit to" and set it to 3 or 4 pages wide (use whatever number makes it fit best) by 1 page high.  You can fine-tune how the images are spread across the number of pages you select by changing the margins to your liking.

It's a bit non-intuitive to use a tool like Excel to print the images of NXT programs, but it is much faster than having to take individual screen shots of every page.  To my knowledge, Excel is the only MS application that can deal with printing long and skinny images properly.

Pete Zulkarnain