domain users logon info

There's more than one way to do this.

1. The first and easyer one is to go to the "system" settings (in the control pannel or press Windows+Pause). The list of all the accounts that have been used to log in on the computer can be found in the "Advanced" tab, in the "User Profile" section. But this can't be scripted.
2. You can also check the list of the profile user by looking in the good directory (C:\Users or C:\Documents and Settings according to your system). But if several users have the same username in various environment you won't be able to determine wich domain the user logged from except by checking the ACL on the home profile folder.
3. Last you can script this using WMI, using the "win32_loggedonuser" class. Here is a small script generated by Scriptomatic V2:

On Error Resume Next

Const wbemFlagReturnImmediately = &h10
Const wbemFlagForwardOnly = &h20

arrComputers = Array("localhost")
For Each strComputer In arrComputers
   WScript.Echo
   WScript.Echo "=========================================="
   WScript.Echo "Computer: " & strComputer
   WScript.Echo "=========================================="

   Set objWMIService = GetObject("winmgmts:\\" & strComputer & "\root\CIMV2")
   Set colItems = objWMIService.ExecQuery("SELECT * FROM Win32_LoggedOnUser", "WQL", _
                                          wbemFlagReturnImmediately + wbemFlagForwardOnly)

   For Each objItem In colItems
      WScript.Echo "Antecedent: " & objItem.Antecedent
      WScript.Echo "Dependent: " & objItem.Dependent
      WScript.Echo
   Next
Next

Under C:\Users is a directory for every user that ever logged onto that machine.

Besides that you could check the Eventlogs.