DN String on windows machine

I am trying to connect to our Active Directory server from a machine which is connected to workgroup and not domain, I can I get the full DN string for connection?

Please logon on to a computer which is connected to domain.

Copy the following txt and save it into a file with the name "logininfo.vbs"
run the file and it will give you the full logon information, use the full dn in the dn field.

Set objSysInfo = CreateObject( "ADSystemInfo" )
strUserName = objSysInfo.UserName
WScript.Echo "User Name: " & strUserName

Thanks
LDAPSoft Support