vbulletin child board style

[JohorBahru]

how to change my vbulletin child board style similar to www.forums.digitalpoint.com or the admin zone forums..

now my forum's child board doesn't shown at the front page as a link.
may i know how to change it? thank you

--------------- Added [DATE]1236251417[/DATE] at [TIME]1236251417[/TIME] ---------------

thanks, i solved it.
just set your Depth of Sub-Forums to "2"
but how to let them aligned properly?