Excel Error

[RazerWriter]

Here is the code:
1 Dim exExcel As Excel.Application
2 Dim exWorkbook As Excel.Workbook
3 Dim exSheet As Excel.Worksheet

5 exExcel = New Excel.Application
6 exWorkbook = exExcel.Workbooks.Open(strFilename)
7 exSheet = exWorkbook.Worksheets("Sheet1")



I get an error at line 6 saying:
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An unhandled exception of type System.Runtime.InteropServices.COMException occurred in Program.exe

Additional information: The server threw an exception.

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Now I know the file exists, and all dlls are loaded. Why am I coming up with this error?

Just in case, it might help to know that I am running under the NET framework, not vb6. I am using Excel 8.0 Object Library