If your module needs more space than is available in the central column of the PHP-Nuke layout, you may want to hide the right column of blocks. This is
accomplished very easily from within the code of any module: find the line
$index = 1;
and change it to:
$index = 0; // 0 : do not show right blocks - 1:show right blocks
Of course, if the line is not there, then $index is already 0, so your module already hides the right blocks.
How to hide the left blocks
If you want to hide the left blocks, you have to modify the theme header. See Section 14.3.9.