mime type association in file roller

[Michele]

> Just open Nautilus (the file browswer), right-click on a .odx file,
> select "Properties" and "Open With" and select the OOo program/module of
> your choice.
>
Hello,

Unfortunately this did not work. File-roller (archive manager) seems
to maintain its own mime types associations. I have placed the
preferred application (/opt/openoffice.org2.3/program/soffice) but
this is the second entry in the list and I cannot find a way to remove
the first entry (/opt/ooo-dev2.4/program/soffice) which is the one
used when I double click on an archived .odx file.

Cheers,

Michele