>>>Dear all,
>>>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.
>>>Thank you in advance.
>>
>>Is this NT4, Windows2000, or Windows XP. Getting the username is easy, and if it's NT4 getting the password is pretty simple too - but are you SURE you want to be doing that?
>
>It is NT4. Not only the password, I also like to get other informations as well.

You can't retrieve the password - not even the system administrator can; the most an administrator can do is reset it. The password is only accessed on a challenge and response basis; you send a possible password and the system either accepts or rejects it.