Compatibility with Desktop Search Engine?

Hi,

This could be a little bit off topic, but i thought maybe someone here can help me with this:

I'm looking for a Desktop-Search engine, which is compatible with Thunderbird Portable (so it can index emails and adressbook).

I've tried Windows Desktop Search with the old addon from citeknet.com, I've tried Copernic Desktop Search and Google Desktop. But nothing worked.

Does anyone know, how to get this done?

Thanks! atreiju