Auto Open Macro to test for a user ID

user_details = Application.UserName
returns the userid in excel
I got a great one to find a logon name I can give you if you want.

Thanks! I appreciate your hard work.

Again Thanks David

here it is as promised enjoy

Private Declare Function GetUserName Lib "advapi32.dll" _
Alias "GetUserNameA" (ByVal lpBuffer As String, nSize As Long) As Long

Function ReturnUserName() As String
' returns the NT Domain User Name
Dim rString As String * 255, sLen As Long, tString As String
tString = ""
On Error Resume Next
sLen = GetUserName(rString, 255)
sLen = InStr(1, rString, Chr(0))
If sLen > 0 Then
tString = Left(rString, sLen - 1)
Else
tString = rString
End If
On Error GoTo 0
ReturnUserName = UCase(Trim(tString))
End Function
Sub nameme()
Range("a1") = ReturnUserName()
End Sub