%Username%

Det er godt nok C#, men funktions kaldende er de samme:

Note: You will need to include a reference to the System.Security.Principal at the beginning of the program.

//Get information on the current logged in user.
WindowsPrincipal wp = new WindowsPrincipal(WindowsIdentity.GetCurrent());

//Display the user’s Windows login ID
label1.Text = "Your login id:" + wp.Identity.Name;

eller prøv at kigge i koden her:
http://www.planet-source-code.com/xq/ASP/txtCodeId.497/lngWid.10/qx/vb/scripts/ShowCode.htm

jeps.,..

løsningen i VB.NET er :

Dim wp As WindowsIdentity
Dim user As String = wp.GetCurrent.Name
MsgBox("Du er logget på som: " + user)

Tj.