I distribute some workbooks that rely on the Analysis ToolPak. The
recipients have a problem if the ToolPak is not installed. Upon opening the
workbook, how can I :

1. Determine and remember if the ToolPak is already installed
2. Install the ToolPak if not already installed
3. Prior to closing the workbook, returning the ToolPak installation status
to what it was initially
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Gary's Student