Ok, here is an example of filling in a form and submitting it automatically.

This example uses the KiXtart search page, and set the following fields:
  • Membership number to "494" (my number)
  • Search forums to "all"
  • Search date to "Since 5 days"
It then submits the search form.
code:
Break On
	
; Create application instance and open search page...
$oIE = CreateObject("InternetExplorer.Application")
$oIE.Visible=1
$oIE.Navigate("http://www.kixtart.org/cgi-bin/ultimatebb.cgi?ubb=search")
	
; Wait for page to stop loading...
While $oIE.busy AND $oIE.readystate <> 4 AND @ERROR = 0 Loop
	
$oDoc=$oIE.document
	
; Form is not named, so identify the form with the relevant field...
For Each $oForm In $oDoc.forms
	; Set membership number
	$oForm.search_user.value="494"
	; If there is no error, then this is the right form
	If @ERROR = 0
		; Set the period and forum scope
		$oForm.search_date.value="5"
		$oForm.search_forum.value="ALL"
		; Submit the form.
		$oForm.submit.click
	EndIf
Next
	
$oIE = 0