Add-ins do not show up in the Add-Ins Ribbon

[Trebormac]

I am using Excel 2007 on Windows XP. I have several Add-ins selected and
they show up under Active Application Add-ins, form the Excel Options,
Add-Ins Dialog but they do not show up on the Add-Ins Ribbon or the View
Ribbon.

I can I find them?

Thanks
Trebormac