[Logician]

1- Edit the template "registeradult" and insert an HTML form field like this into somewhere before </form>:

PHP Code:

<normalfont>Password to register:<input type="text" name="specialpassword"></normalfont> 


(You can spice up the design)

2-Then edit register.php, find:

PHP Code:

  if (!$allowregistration) {
    eval("standarderror(\"".gettemplate("error_noregister")."\");");
    exit;
  } 


after that add:

PHP Code:

  if ($specialpassword!='XXX') {
    eval("standarderror(\"".gettemplate("error_inviteonly")."\");");
    exit;
  } 


(Replace X with your special password)

Create a templated named "error_inviteonly" and enter your error message there. This will be displayed if the member didnt enter the correct password for registering.. Notice the password is case sensitive..

Enjoy..