Be sure to change the user id,user name and forum id variables. If they don't exist you will get an error. Looks like you might have used example variables (from
MK@spug.net). Let me know if you still have problems after changing these:
$greeter=1; //Your User ID
$greeter_name="Your User Name"; //Your User Name
$greetings_forum=1; //enter the forum id that you want the thread to go into