Help to load Txt or Xlsx information to I.E

Good Night all.

im trying to elaborate a script that load information from a notepad or a excel document. I really really have no experience in autoit so i need your help guys,

I have the following layout :

Information to imput

Importation number   Enterprise      Value     Date
1                               111111111     1.00   07/01/2013
2                               222222222     2.00   07/01/2013
3                               333333333     3.00   07/01/2013
4                               444444444     4.00   07/01/2013
5                               555555555     5.00   07/01/2013
6                               666666666     6.00   07/01/2013
7                               777777777     7.00   07/01/2013
8                               888888888     8.00   07/01/2013
9                               999999999     9.00   07/01/2013
10                            1111111110   10.00   07/01/2013
 

#include <IE.au3>
$oIE =_IECreate()
_IENavigate($oIE, www.fazenda.sp.gov.br/simp)
_IELoadWait($oIE)
$o_form = _IEFormGetObjByName($oIE,"form1")
$o_txtCpf = _IEFormElementGetObjByName($o_form, "txtCpf") 

$o_txtNumDoc = _IEFormElementGetObjByName($o_form, "txtNumDoc") 
$O_btnConsultar = _IEFormElementGetObjByName($o_form, "btnConsultar") 
_IEFormElementSetValue($o_txtcpf, "11111111111") ; txtCpf = Enterprise
_IEFormElementSetValue($o_txtNumDoc, "1"); txtNumDoc = Import number
$O_btnConsultar.click

_IELoadWait($oIE)
$o_form = _IEFormGetObjByName($oIE,"_ctl0")
$O_btnContinuar = _IEFormElementGetObjByName($o_form, "btnContinuar")
$O_btnContinuar.click

_IELoadWait($oIE)
$o_form = _IEFormGetObjByName($oIE,"Form1")
$O_btnGare = _IEFormElementGetObjByName($o_form, "btnGare")
$O_btnGare.click

_IELoadWait($oIE)
$o_form = _IEFormGetObjByName($oIE,"Form1")
$o_txtObs = _IEFormElementGetObjByName($o_form, "txtObs")
$o_txtDataPagto = _IEFormElementGetObjByName($o_form, "txtDataPagto")
$o_txtReceita = _IEFormElementGetObjByName($o_form, "txtReceita")
_IEFormElementSetValue($o_txtObs, "1"); txtObs = Import number
_IEFormElementSetValue($o_txtDataPagto,"01/08/2013")
_IEFormElementSetValue($o_txtReceita,""); txtReceita = value
$O_btnGerar.click

Imagine that i have almost 250 files to input and generate the collection on web page.

Is there a way to create a loop that the field (below)seek information in another document like a txt or excel document ?

_IEFormElementSetValue($o_txtcpf, "11111111111") ; txtCpf = Enterprise
_IEFormElementSetValue($o_txtNumDoc, "1"); txtNumDoc = Import number
 

_IEFormElementSetValue($o_txtObs, "1"); txtObs = Import number
_IEFormElementSetValue($o_txtReceita,""); txtReceita = value
 

Thanks for the attention.