edit exported excel report

I have the following which exports my report to excel and then opens the file.



Can someone please help with script to now change the font size for columns A-C to size 12.

I want to do other things also but once someone point me in the right direction of how to edit the opened file I should be OK.

Code:

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Sub test7()



'initialize variables

Dim strReportName As String

Dim strPathUser As String

Dim strFilePath As String



'set variables

strReportName = "stockTakeReportList"

strPathUser = "C:\"

strFilePath = strPathUser & strReportName & Format(Date, "yyyymmdd") & ".xls"



'export to excel

DoCmd.OutputTo acOutputReport, strReportName, acFormatXLS, strFilePath



'launch excel file

Dim Shex As Object

Set Shex = CreateObject("Shell.Application")

Shex.Open (strFilePath)

End Sub

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edit exported excel report