left sidebar controls center and right sidebar

Dear,

First of all i would like to say that i like this theme very much. i'm a kind of new with wordpress, but i guess i'll manage it. I've a question about hte sidebars. I searched this forum, but without any luck. What i want to achive is to manage the center and the rightbar with a link in the left sidebar. So, if i click on a link in the left sidbar i want to appear the page in the center and i pricelist in the right sidebar. This must be available for every link in the left sidebar. When you go to my "website you'll see what i mean. It is in dutch, but i will explain it.

The side is http://www.meerdanschoonheid.nl
When you click in the left sidebar on "Body Sugaring" you'll see the text in the centerpage. Now i want on the right sidebar the pricess to appear for this item.

When you click on "Lichaamsversiering" you'll see the centerpage will show a new text. On the right sidebar i want the prices to appear of the "lichaamsversiering" subject.