Using PowerShell to add VBA to an Excel spreadsheet

Question

I have a PowerShell script that creates an Excel spreadsheet and is able to save it.  I also have VBA code that I would like to put into that newly created spreadsheet.
Is there a way of adding the VBA code into my newly created spreadsheet using PowerShell? 
Thanks,

Answer 1

Thanks for the response Alex,
Where I use to work, we would commonly do this with VBScript and Excel 2003.   Below is an example from the Scripting Repository using VBScript (Add a Macro
to an Excel Spreadsheet)
Set objExcel = CreateObject("Excel.Application")
objExcel.Visible = True
objExcel.DisplayAlerts = False
Set objWorkbook = objExcel.Workbooks.Open("C:\scripts\test.xls")
Set xlmodule = objworkbook.VBProject.VBComponents.Add(1)
strCode = _
"sub test()" & vbCr & _
" msgbox ""Inside the macro"" " & vbCr & _
"end sub"
xlmodule.CodeModule.AddFromString strCode
objWorkbook.SaveAs "c:\scripts\test.xls"
objExcel.Quit
We would use a variant of this method to generate static Excel reports from spreadsheets that were linked to external data sources.
Now...  it's time for me to upgrade my code and get on the PowerShell boat :)  So I have been working on a script that does a similar thing, but there does not appear to be a method of adding a macro to an Excel spreadsheet using PowerShell.  There
appears to be no way of calling VBProject.VBComponents.Add from within PowerShell.
I have tried manipulating the data that resides within Excel by directly accessing it from PowerShell, but this has proven to be painfully slow.  What a macro can do in 3 seconds, takes PowerShell 8 hours to do :(
If it can't be done... then I'll have to revert back to my old ways.  But if it can be done, great!!!  PowerShell has alot more to offer me than VBScript did.