I am building a small application for a friend and they\'d like to be able to use Excel as the front end. (the UI will basically be userforms in Excel). They have a bunch of dat
You could try something like XLLoop. This lets you implement excel functions (UDFs) on an external server (server implementations in many different languages are provided).
For example you could use a MySQL database and Apache web server and then write the functions in PHP to serve up the data to your users.
BTW, I work on the project so let me know if you have any questions.