Changing Acidtech forum width

[Rinko]

I'm the one. The only one out there still using phpBB2.

I need to change the forum width on my Acidtech template. How do I do that? I tried to do the obvious by messing with overall_header.tpl, but it doesn't work there like any other template because the width is determined by T_BODY_BACKGROUND & I have no idea how to change that.

[CyberAlien]

In control panel in styles admin edit AcidTech style and change "background image" field. That field is used as width.

[Rinko]

In control panel in styles admin edit AcidTech style and change "background image" field. That field is used as width.Thanks! That worked.