All the forums and subforums are displayed on the same forum display

[solidlink]

without any highlighting of the main category?

Any settings for me to change or do I just have to look for a style that shows each category/main category differentfly from subforums?

http://intdex.com/forums/index.php?styleid=1

[soundbarrierpro]

Looks fine to me. "Linux" is the category. You created all your forums under Linux.