In the Microsoft domain environment, how to retrieve a user's username and password (and other properties) in runtime. I would like to use them for making different interfaces and functions for each user.

Sys(0) returns the machine name and user id on the currently running machine, but I don't think you can get the NT passwords in any way from VFP. This would lead to serious security issues if you could. You can use sys(0) in conjunction with your login table to set rights/preferences for users.

Kevin