Ok, here's the "Glenn/apronk" special:
 Code:
Dim $objFSO, $strIni, $objIni, $strTxt
$objFSO = CreateObject("Scripting.FileSystemObject")
$strIni = "C:\someinifile.txt"
$objIni = $objFSO.OpenTextFile($strIni, 8, 1)
$strTxt = $objIni.ReadAll
$strTxt = Join(Split($strTxt,"ICO=10.32.62.30"),"ICO=MyDomain")
$objIni.Write($strTxt)
$objIni.Close