UBB.threads PHP Forum Software Community Forums UBB.classic UBB.classic 6 Support HTML Template? Say what?

The big style change from the 5-series to the 6-series was the adoption of Style Templates.

Instead of defining a board-wide Header and Footer, and then overriding those on a forum by forum basis, you now define a Style Template and apply that style to areas of the board. It's the Style Template you'll want to modify - there will be fields for the Header and Footer on the HTML Includes tab.