>I am working on a small app that is to reside on a network. When the user runs the app, they select the types of information they need and based on this various tables and other files are to be copied to a directory on the users local drive. How do I determine what the local drive letter is?

Which one? There can be more than one, and the user should be asked which to use IAC. The DriveType() function should let you test the drive type easily; it is part of VFP6, and was part of FoxTools before that.