I'm not sure exactly what you are trying to do...
If you are wanting to convert your server and then use it to run an Access based database, it will probably not work. Linux and Microsoft products typically not compatible. The only possibility would be to set up the server as a file server and then store the database on it, but access it through a Microsoft Client. If that is the question, you may have more success with Linux forum.
If what you are trying to achieve is a robust database server, that you can right client/server applications for, I would suggest looking at MySQL or PostgreSQL, which typically come included with the Linux kernel. That is probably the topic for a different forum as well.
Hope that steer you in the right direction,