Andrew,

>The fields map to data types in the database tables. Is it possible to set a value for Data in the key which points to my own class? If so, what is the correct syntax for this?

Ok, so you haven't specified any special classes in the Tools/Options dialog yet. Once you specify an own class, you will see registry entries like this:

[HKEY_CURRENT_USER\Software\Microsoft\VisualFoxPro\7.0\Options\IntelliDrop\FieldTypes\Character]
"ClassLocation"="c:\\programme\microsoft visual foxpro 7\ffc\_base.vcx"
"ClassName"="_textbox"

You can set these registry entries from a VFP program and force VFP to re-read the registry settings with SYS(3056). This way you can write several prgs that set the environment for each of your projects.

Armin