Code:
alias test { dialog -m test test }
dialog test {
  size -1 -1 200 200
  list 1, 5 5 190 150, hsbar vsbar
  button "OK", 2, 5 175 80 23, ok
}
There were some syntax problems in your dialog table

#mircscripting @ irc.swiftirc.net == the best mIRC help channel