Can I disable right sidebar when on a cat page which has subcats?

[mcpisik]

If I'd like to hide the right column from all, except home page, ezpages and say one category (id 7)
How would I code that?
Thanks

[gjh42]

if ($this_is_home_page or ($current_page_base == 'page') or ($current_page_base == 'index' and $cPath == '7')) {
  //show right col
} else {
   $flag_disable_right = true;
} 

[mcpisik]

Terrific thanks