Script wmi

Question

Hello all,
I need help for an script wmi to output excel, this script work fine but I would add function to export.
This function is UserName (login user)in the script.
Please help me.
' text file to read from
strReadFile = "C:\computers.txt"
' excel file to create
sXLS = "C:\service tags.xls"
Set objFSO = CreateObject("Scripting.FileSystemObject")
Set objTS = objFSO.OpenTextFile(strReadFile)
Set objShell = CreateObject("WScript.Shell")
Set objExcel = CreateObject("Excel.Application")
objExcel.Application.DisplayAlerts = False
objExcel.Visible = True
objExcel.Workbooks.Add
' define the column titles
objExcel.Cells(1,1).Value = "Computer Name"
objExcel.Cells(1,2).Value = "Model"
objExcel.Cells(1,3).Value = "Service Tag"
xRow = 1
yColumn = 1
' apply styles to rows and columns
Do Until yColumn = 4
objExcel.Cells(xRow,yColumn).Font.Bold = True
objExcel.Cells(xRow,yColumn).Font.Size = 11
objExcel.Cells(xRow,yColumn).Interior.ColorIndex = 11
objExcel.Cells(xRow,yColumn).Interior.Pattern = 1
objExcel.Cells(xRow,yColumn).Font.ColorIndex = 2
objExcel.Cells(xRow,yColumn).Borders.LineStyle = 1
objExcel.Cells(xRow,yColumn).WrapText = True
yColumn = yColumn + 1
Loop
x = 2
y = 1
' start reading from the text file, until the end
Do Until objTS.AtEndOfStream
strComputer = objTS.ReadLine
' check if the computername is pingbale, if not then skip to next name
If (IsPingable(strComputer) = True) then
Set objWMIService = GetObject("winmgmts:" _
& "{impersonationLevel=impersonate}!\\" _
& strComputer & "\root\cimv2")
Set colComputer = objWMIService.ExecQuery _
("SELECT * FROM Win32_ComputerSystemProduct","WQL",48)
y1 = y
If Err.number=0 Then
For Each objComputer in colComputer
objExcel.Cells(x,y1).Value = strComputer
y1 = y1 + 1 ' go to next column
objExcel.Cells(x,y1).Value = objComputer.Name
y1 = y1 + 1 ' go to next column
objExcel.Cells(x,y1).Value = objComputer.IdentifyingNumber
x = x + 1 ' go to the next Row
Next
Else
objExcel.Cells(x,y1).Value = strComputer
y1 = y1 + 1 ' go to next column
objExcel.Cells(x,y1).Value = "Model not found!"
y1 = y1 + 1 ' go to next column
objExcel.Cells(x,y1).Value = "Serial not found!"
x = x + 1 ' go to the next Row
End If
Err.clear
Else
objExcel.Cells(x,y1).Value = strComputer
y1 = y1 + 1 ' go to next column
objExcel.Cells(x,y1).Value = "Not Pingable"
x = x + 1 ' go to the next Row
End If
Loop
objExcel.Columns("A:C").Select
objExcel.Selection.HorizontalAlignment = 3 'center all data
objExcel.Selection.Borders.LineStyle = 1 'apply borders
objExcel.Columns("A:AH").EntireColumn.AutoFit 'autofit all columns
Const Excel07 = 12
appVerInt = split(objExcel.Version, ".")(0)
If appVerInt- Excel07 >=0 Then
objExcel.ActiveWorkbook.SaveAs(sXLS), 56 'You use office 2007 / 2010
Else
objExcel.ActiveWorkbook.SaveAs(sXLS), 43 'You use office 97-2003
End If
objExcel.Quit
set objExcel = Nothing
objTS.Close
msgbox "Done!"
WScript.Quit
Function IsPingable(ByVal strHost)
If Trim(strHost) <> "" Then
strCommand = "Ping.exe -n 3 -w 750 " & strHost
Set objExecObject = objShell.Exec _
("%comspec% /c title " & strHost _
& chr(38) & strCommand)
Do While Not objExecObject.StdOut.AtEndOfStream
strText = objExecObject.StdOut.ReadLine()
If Instr(strText, "TTL=") > 0 _
Then IsPingable = True : Exit Do
Loop
If IsPingable = True then
With GetObject("winmgmts:root\cimv2")
For Each objProcess in .ExecQuery _
("SELECT commandline FROM Win32_Process" _
& " WHERE Name = 'ping.exe'",,48)
If objProcess.commandline = strCommand _
Then objProcess.Terminate() : Exit For
Next
End With
End If
End If
If (not IsPingable = True) Then IsPingable = False
End Function

Answer 1

Set colComputer = objWMIService.ExecQuery _
("SELECT * FROM Win32_ComputerSystem","",48)
y1 = y
If Err.number=0 Then
For Each objComputer in colComputer
objExcel.Cells(x,y1).Value = strComputer
y1 = y1 + 1 ' go to next column
objExcel.Cells(x,y1).Value = objItem.Username
y1 = y1 + 1 ' go to next column
objItem.UserName
I know and this  why I would like to add this feature to output excel but I don't know, see in example for understand