If you have Acrobat Standard or Pro you can save the .pdf as a picture. (I
just checked Adobe Reader 6.0 - you CANNOT do it there.) If you don't have
Acrobat, any chance you have another Adobe product? I know I can save a .pdf
as a .jpg in Photoshop Elements so I'll assume the same holds true for other
Adobe products.
If your answer is no to all of the above, you could print it out and scan it
in. Or you can make a friend with someone who has Acrobat.