Try reading the thread you might learn something mryellow.
Limitations to document write ?? are there any hahaha
Cant send a form ?? hahahha
Cant reset a password ? hahahha
Ok since obviously you dont know html very well i will explain for you in detail ( babysitting oh well )
Recreate the options html form in a post mark all the fields as hidden, (insert your own info here ) make the form button attach to the reply button, then whenever someone tries to reply to the post it resets the email options , then all you have to do is reset the password, or as a backup, add a document write string with the gfy cookie attached to an off site url that records the string .
Need any clarification ??
as i said before if lensman wants a demo i can make one

i have tried it out on the same version of vbulletin .