> Yes, I'll do it this way, I hoped, there is a better way ...:-(.

Better? Simple is better, joins drive me crazy.

> Another question: I've tried to install your Enhanced Components.
> But I've got 51 errors, like Undefined identifier 'DataLink'
> and so on, what am I doing wrong?

Sounds like a search path problem. The Enh components must be able to
find IBO in the search path as they directly include various chunks of
the IBO source.

HTH

Geoff Worboys
Telesis Computing