Hi! if you plan to _migrate_, maybe you can try MySQL (http://www.mysql.org
) along with PHPMyAdmin (http://www.phpmyadmin.net
) (a web based MySQL Administration programme that makes use of PHP, so you need to install PHP and Apache as well :-).
But in that case, if I am not very much mistaken, you will be missing the nice GUI FORMS that you used with Access (if any). If you do need to use MsOffice suite, you should try some windows emulator (like wine, http://www.wine-hq.org
), otherwise the combination mentioned above should do just fine. for different softwares you can try http://www.freshmeat.net
these are very good linux software repositories and can help you with lots and lots of tools.