permission in Windows 2000

If I have 2 folder in hardisk. FolderA and FolderB.

If I have 2 user. How can I set that when User A log in. He see and use only FolderA and when user B log in. He see and use only FolderB.

Now I can do only user A see both FolderA and FolderB. but user A cann't use Folder B.

Any help is appreciate

This can sorta be done using profiles. if you log on as a and drag a folder to the desktop, b shouldnt see it because it should be in a's profile and not b's - the desktop should be user-specific.

that might work.

other solution would be to map drives for user a to the area he has access to and dont map the drive for user b and reconnect them at logon. again this is profile related i guess.