first, code you suggested worked like charm

regarding my client: he gaved me to links of websites which have subcategories listing that are acceptable for him,



1. http://kejparts.katalogazja.pl

This is is the first one and most acceptable for him (because there will be ton of products and categories so it is important that listings are simple and easy for use).




2. http://www.milneroffroad.com

This one is also acceptable for him but he primarly would like to have listing system like on link I have mentioned on number one position. With your help, I have acomplished to have listing similar to this link on second position.




As I have mention in text above, my goal is primarly to create subcategories listing similar to link on number one position, so now I will try to customize it following your tips/suggestions:

use the #chcategories sidebox for the main (left) menu
for this part, no problem, I used #chcategories sidebox as the main menu

#categories sidebox on the right with code to let it show only at the right level
do I have to set #categories sidebox on the riht column or main midlle column cause I have disabled "Column Right Status - Global" under Admin>Configuration>Layout Settings ? I am not sure what exactly have to and also how to change code to let it show only at right level?