For anyone interested:

j-Interop implements DCOM wire protocol (MSRPC) to enable development
of Pure Bi-Directional, Non-Native Java applications which can
interoperate with any COM component.The implementation itself is
purely in Java and does not use JNI to provide native access,thus
being truly platform independent. It has full support for COM
automation and supports callback from COM Servers (event handling).

1.04(a) has been tested on Fedora 5 and Windows XP/2K/2K3. Beta is
expected out by second week of september.

This release can be downloaded from
http://sourceforge.net/project/showfiles.php?group_id=174727

Thanks,
best regards,
Vikram