Hi,
I was searching for a way to control the sideboxes and hit this post.
What I want to achieve is slight different form what you described in this post.
I want to control which side box is shown in a certain position depending on the page shown.
For instance I want to show the review sidebox in first position on the left column when:

the customer is watching the product page,
and
there is a review for that product,

while I want the review box to be shown in 5th position in all other pages.

In a way it is like the shopping cart box. Because I have set it at position 1, and it is active only when something is in it, it will show automatically in first position when needed.
Any idea form the code gurus?
thanks

enzo