Hi,
In the mean time I found that there is an effort ongoing to make M$ Access DB's accessible on Linux. It is called MDB Tools. You can find the project at http://sourceforge.net/projects/mdbtools and http://mdbtools.sourceforge.net/.
It includes an ODBC driver for mdb DB's, so it might be that you could administer the mdb's from within OpenOffice.org with it. If not, it allows to export the data and (if the target knows that kind of functionality) queries, reports, forms to other DB's like PostGreSQL.
The problem I have with it is that the it does not run on Mandrake 9.1 due to dependencies issues, at least not when you install from the rpm. I forced the rpm to be installed anyway and what I saw was great (more or less the functionality from M$ Access, just less goodlooking. However when I tried to use it, it crashed. I'm still a newbie, so I'm not going to go the recompilation route (don't even know if that would solve the dependency issues).
I read in some post that in Mandrake 9.0 it did work OK, so I might try to install a Virtual Machine with it. If I can find the time,...
If someone tries out, let us know your experiences. Thanks.
Ciao,
Sitor