Well, I'm not sure if anyone has explored the Beta release of Office 2007 to
be able to answer this question or not, but thought I'd give it a shot. I
have an Add-In that I've developed, compatible with Excel 2000 through Excel
2003 and am looking for a way to control the order of 3 Custom Toolbars the
Add-in deploys in the Add-Ins Tab of Excel 2007's "Ribbon". After quite a
bit of finagling, the present code makes use of the following approach (not
actually what I'm using because I had to monkey around with it and repeat
some of the code because it didn't always work across all 3 Excel versions
without the repetitive code, but it should suffice to convey the method):

With Application.CommandBars("1st Toolbar")
..Enabled = True
..Visible = True
..Position = msoBarTop
..Left = 0
End With
With Application.CommandBars("2nd Toolbar")
..Enabled = True
..Visible = True
..RowIndex = 2
..Left = 0
End With
With Application.CommandBars("3rd Toolbar")
..Enabled = True
..Visible = True
..RowIndex = msoBarRowLast
..Left = 0
End With

This code is seemingly ignored in Excel 2007 and the Toolbars are deployed
in a fashion I can't make sense of - I initially thought they might be
sorted alphanumerically and tried renaming the toolbars to see if that was
the trick, but that didn't work either. I also tried reversing the order of
the code but that seemingly had no effect either. If anyone has any ideas,
I'd love to hear them.

Thanks,

Jeff