Why is this?

When I insert a clip art into a excel spreadsheet, I format it so it doesn't
print when printing document and I have selected 'don't move or size with
cells'. Nothing seems to help. Everytime, I do a print screen or print, the
clip art re-sizes itself to it's original sizing.

For an example: when inserting a clip art, I size it to my specifications
and select it not to print. As soon as I preview or print the document, the
clip art moves and re-sizes itself back to the size it was when I inserted it.