Cant connect to the Visual Foxpro database running in internet

I use VS2008, ASP.net.

I made a server side ASP.net page. This page connect to Visual Foxpro database.

It is running fine in development environment.

However, when run through brower with http://www.XXXX.com/default.aspx.

The form displayed, when connect to database, it can't connect to the database.

Can anyone tell me anything wrong?

if you need more information? contact me.