Diablo 3 Steam Overlay

Launcher = "Diablo III Launcher.exe"
Client = "Diablo III.exe"

' if nothing was passed in, we are starting from scratch, so start the launcher
If WScript.Arguments.length = 0 Then
 Home = WScript.ScriptFullName
 Home = Left(Home, InStr(Home, WScript.ScriptName)-1)

 'run the launcher
 Set objShell = WScript.CreateObject("Shell.Application")
 objShell.ShellExecute Launcher, "", Home

 ' create the file that the elevated script will copy executables's path and commandline to
 set fso = CreateObject("Scripting.FileSystemObject")
 set tempfolder = fso.GetSpecialFolder(2)
 tempname = tempfolder & "\" & "steam.tmp"
 set tempfile = fso.CreateTextFile(tempname)
 tempfile.close()

 'run this script but signal that it needs to elevate by giving it the tempfile name as an argument
 Set objShell = CreateObject("Shell.Application")
 objShell.ShellExecute "cscript.exe", Chr(34) & WScript.ScriptFullName & Chr(34) & " " & tempname, "", "runas", 2

 WScript.Echo "Waiting for other script to finish..."
 ' check every second if the temporary file has been updated with the commandline info
 Do While True
 'check the filesize of the tempfile
 set tempfile = fso.GetFile(tempname)
 If tempfile.Size > 0 Then Exit Do
 WScript.Sleep 1000
 Loop

 ExecutablePath = Home
 set tempfile = fso.OpenTextFile(tempname)
 CommandLine = tempfile.ReadLine
 tempfile.close()

 Set objShell = CreateObject("Shell.Application")
 objShell.ShellExecute Client, CommandLine, ExecutablePath

 fso.DeleteFile tempname
 WScript.Quit
Else
 ' we are elevated now
 WScript.Echo "Waiting for launcher to start client..."

 'Get Windows Manager object
 Set objWMIService = GetObject("winmgmts:" & "{impersonationLevel=impersonate}!\\.\root\cimv2")

 ' check every second for client that was launched by launcher
 While True

 'Get info on processes named Client
 Set InstanceList = objWMIService.ExecQuery _
 ("Select * from Win32_Process Where Name = '" & Client & "'")

 for Each Instance in InstanceList
 cmdline = Instance.CommandLine

 'we found the client we care about
 Instance.Terminate()

 'remove the exe path and name from the cmdline
 position = InStr(1, cmdline, """ ") + 1
 cleanCmdLine = Right(cmdline, Len(cmdline) - position)

 tempname = WScript.Arguments(0)
 set fso = CreateObject("Scripting.FileSystemObject")
 set tempfile = fso.OpenTextFile(tempname, 2)
 tempfile.WriteLine(cleanCmdLine)
 tempfile.close()

 WScript.Quit
 Next

 WScript.Sleep 1000
 Wend
End If