Hi guys.,
Basically what i am trying to do is that to get the input from the user 
and check to see if that user exist in a particular OU.

this code will return true if a user exist in an active directory.

    Public Function validate1(ByVal UserName As String, ByVal pwd As 
String)

        Dim path As String = "LDAP://Domain/path"
        Dim UsrName As String = "Domain\" & UserName

        Dim authenticated As Boolean
        Try
            Dim authenticationEntry As DirectoryEntry = New DirectoryEntry
(path, UsrName, pwd)
            Dim authenticatedName As String = authenticationEntry.Name
            authenticationEntry.Close()
            authenticated = True 
        Catch er As Exception
            authenticated = False
        End Try

        Return authenticated
    End Function

--> in the path i specified the OU and container 

it supposed to return true if a user exist in that container. But for some 
reason, it will also return true if the user exist in different container.
any idea what's going on?
thanks in advance