As the Anonymous Monk said, the MSDN Excel reference can be quite useful. I found this VB code in reference to the PageSetup.FitToPagesTall Property: 
With Worksheets("Sheet1").PageSetup
    .Zoom = False
    .FitToPagesTall = 1
    .FitToPagesWide = 1
End With

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It lookslike you need to make sure that the PageSetup.Zoom property is false. The proper way to do this is defined in the node: Using Win32::OLE and Excel - Tips and Tricks as already referenced by Anonymous Monk. Note that the example in that node does exactly what you want, setting the page scaling to 1 page exactly.

In reply to Re: Win32::OLE, Excel, & page scaling and printing by Sinistral
in thread Win32::OLE, Excel, & page scaling and printing by sphinxy09

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