[Davros]

Right with a bit of help from Stelthius I got this sorted.

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// check if there is a forum password and if so, ensure the user has it set

Add Above it

 if (!is_member_of($vbulletin->userinfo, 5,6,7))
{
   if ( !$vbulletin->db->query_first ( "SELECT postid FROM " . TABLE_PREFIX . "post WHERE userid='".$vbulletin->userinfo[userid]."'  AND threadid=$threadinfo[threadid]" ) ) :   
                        eval('print_output("' . fetch_template('MARCO1 Cant See Attach') . '");');   
                endif ;

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?>

Add above it

 }

All working If you need to add any additional usergroups just add them onto to the bit of code that's highlighted in Red separate them with ,