Import real-time or one-time?
If not real time, use PHP or any SQL editor to write a script to call the fields in the Express Dbase database into your SQL database.
To view the Dbase structure, you can download any Dbase editor from download.com, they are free, out there but not many. Dbase is quite old and unmanaged type of database.
What I did was to use PHP to run script with a web-based Apache2 server. PHP5 and older have the function to call into Dbase. You dont need to know SQL language in this case, but you can also use SQL script with PHP.
Email me if you have questions.
zychob@yahoo.com