I wasn't trying to get you pissed..
The answer to your question: no, that's not possible. You have only one image, so creating three partitions is probably not neccesary.
What I meant, is that it's preferable to restore the image in another
location and move the file you need to it's original location. Waaaaay more convinient than backing up /var/www, /home, restoring your whole system and then restoring /var/www and /home. That's simply not needed.
Awell.. you got my thoughts on your simple question..