How to open a specific Excel document from VB code ?

[RichardCouturier]

I'm trying to open an Excel document using the Excel9.olb library.
The following code creates an instance on Excel App:
Set ExcelSheet = CreateObject("Excel.Sheet")
But how do I open a specific document (by path and name) without using the "GetObject" function.
I must use the "CreateObject(...)" before opening the file.
Thanks !