Thread:Project:Support desk/union of 2 category pages

I want to display on the main page 2 categories of my wiki, for categories i mean pages like, that because i don t want to put on my main page (it is a private wiki) only 2 link, one for each category. I know that is not natural put on wiki 2 pages as one, expecially two categories, but i really need that, maybe is possible with an extension, i ask here for have the best way to do that :) ty.

Mediawiki 1.15.1 PHP 5.3.3-7+squeeze3 mysql Ver 14.14 Distrib 5.1.49