I'm trying to get an mIRC bot to log into a forum, but so far haven't succeeded.

What I have so far:

alias forum {
  sockopen forum forum.com 80

on *:sockopen:forum:{ 
  write -c forum.html
  sockwrite -n $sockname GET / HTTP/1.1
  sockwrite -n $sockname Host: $+(forum.com,$crlf, $crlf)

on *:sockread:forum:{
  if ($sockerr) {
    echo -a Error.
  else {
    var %temptext
    sockread %temptext
    write forum.html %temptext

I somehow need to send it the cookies, so it will recognize me as logged in.
I've tried things like: sockwrire -n $sokname Cookie: etc, but it didn't work.