Ahhh. Depending on the example, you may need an IMAQ Vision VI, called WindDraw, to display the image that is being processed. If WindDraw is the only VI that's missing when you open the example program, then simply download the replacement VI. It can be found in an example program called IMAQ Display without IMAQ Vision. It should be a drop in replacement to WindDraw.
However, if the example programs you download actually process an image, you will need the IMAQ Vision toolkit to run them.
Let me know if you have any further questions about example programs.
Kyle V