I'm playing with VSTO to VS2008 trying to make a ribbon where a can generate
a screentip like the one on Insert -> Cover Page - that is: "Showing a
sample doc picture in the tip function"
Can anybody point me in the right direction?

How does VSTA relate to VSTO?

i have developed a simply Excel 2003 Application with VSTO 3.0 (VB 2008).
The application shows only a message on startup.
On the develop-pc the application runs without problems.
When i deploy the application on another pc i receive a message like the