How can I start a specific excel version in com automation?

Question

I use Excel via COM automation (in c#), but it seems that the problem has no control over what version of excel is started on the box - we use both Excel 9 and Excel 11 and

Answer 1

This article may be of use:

http://forums.devx.com/showthread.php?p=457900#post457900

Like the commenters above, it's unclear to me why Excel 11 would have problems with an Excel 9 spreadsheet