mime: View Internally with catdoc, Externally with OpenOffice

[Uwe Brauer]

Hello

I would like to display word attachments, either *internally*
using 
catdoc, antiword or wvText or anything like this, however if this
conversion fails, I would like to use
via *View externally* Openoffice.

As I understand gnus scans the .mailcap file, but I don't know how to
set this up in order to achieve what I want.

Can anybody help me, thanks in advance

Uwe Brauer