I am also caught in a similar situation, seems like this will also workout for me, but the link posted by you is dead, gives a 404. Could you please re-post the link or let me know where to find it.?
Just for details, I am trying to build a page which would list all the subcategories that fall under a particular category, with images of the category and name under it. So I think, i could do this by getting the subcategory names under the category, the category image, and the category name. Not sure, if that would work out thought.