[kh99]

The vbulletin scripts use the "do" to do exactly that. You really just have to write your script with something like:

if ($_REQUEST['do'] == 'page1')
{
   // do stuff for page one
}
else if ($_REQUEST['do'] == 'page1')
{
   // do stuff for page two
}
// etc

and for instance if page 1 shows a menu, you just need to make the link href for the choices be something like "wiki.php?do=page2" (or if you want to submit a form, make the action "wiki.php" and include a hidden field with name 'do').

Of course if you want you can use 'show' for your parameter instead of do.