Get current logged on user from 98/NT/2000 workstation?

How can I find out the username of the person who is running an app. For instance, I have a program that a user uses to send information to a server app. but I would like to know the username that is submitting the data so I can add it to the data string being sent? Any ideas?

Thanks!

here is what I have done :)

VB Code:

Public Declare Function GetUserName Lib "advapi32.dll" Alias "GetUserNameA" (ByVal lpBuffer As String, nSize As Long) As Long
 
' in a form 
Dim StrReturn As String
Dim lBuffer As Long
Dim LReturn As Long
Dim Length As Integer
 
On Error GoTo checkerror
 
If deploytype = "3" Then
    frmDesktop.Label6.Caption = User
    Exit Sub
End If
 
lBuffer = 199
StrReturn = String$(200, 0)
LReturn = GetUserName(StrReturn, lBuffer)
 
If LReturn <> 0 Then CurUser = Left$(StrReturn, lBuffer) Else CurUser = ""
 
Length = Len(CurUser)
Length = Length - 1
User = Left$(CurUser, Length)
 
frmDesktop.Label6.Caption = User
 
Exit Sub