In your theme.php you need to find:
Code:
function themeheader() {
global $user, $banners, $sitename, $slogan, $cookie, $prefix, $dbi;
This is just an example, the list of variables ($user, $banners) won't match exactly.
Add the $name variable to the list:
Code:
function themeheader() {
global $user, $banners, $sitename, $slogan, $cookie, $prefix, $name, $dbi;
Then find:
And replace it with:
Code:
if ($name=='Forums') {
/* Don't display it. */
}
else {
blocks(left);
}
You will need to do this for each theme you have on your site.
Cheers.