I just discovered this one: Openoffice.org, which is available on both windows and *nix, apparently has an experimental .mdb reader and it can write in many formats.
Did you read the second sentence of my reply? It specifies what to do if you don't have Access. Did you follow the links in that second sentence? They go to the documentation for the modules that will help you do what you want. Did you read that documentation and get stuck? If so, tell us what part you're stuck on and we'll be glad to help. You also need to tell us what OS you are using since the specifics of the answer differ depending on whether you are on windows or not.