Hi,
MySQL Workbench is not the right tool for the task you listed. In your case it would be better to use MySQL Query Browser (which is part of the MySQL GUI Bundle for 5.0
http://dev.mysql.com/downloads/gui-tools/5.0.html) to create your tables and fill it with data. You can export database tables to text files there as well.
We are going to add this functionality to MySQL Workbench in the future but for now QB is the way to go.
If you are targeting the Windows platform, VisualStudio 2005 or VS 2008 is the way to go and you should use the C# language to write your application. VS includes a very nice form designer that will make your job easy.
Hope that helps,
Mike
Michael Zinner, Team Lead, Developer Tools
MySQL AB, www.mysql.com
Are you MySQL certified? www.mysql.com/certification