A quick little snippet I came up with in 25 minutes or so of work. Download and save the following image as 'sysimg.png'

Load The code into your remote, and [size=18]save it in the same place as the image[/size]

It doesn't work that great, more of a proof of concept. It does use the run command, so if you don't have run enabled it wont work.

The icons are as follows: ShutDown, Restart, Sleep, Hibernate, Lock and Log off respectively.

Double click to use.

on *:Start:{ SysCtrl }
alias SysCtrl {
  window -w0Bp +d @SysCtrl $calc($window(-2).dw - 307) $calc($window(-2).dh - 27) 307 27
  drawpic -c @SysCtrl 0 0 $shortfn($scriptdirsysimg.png)
}
menu @SysCtrl {
  mouse:{
    var %b = $ceil($calc(($mouse.x - 1) / 51))
    If (%b == %Sys.Mouse) { halt }
    Set %Sys.Mouse %b
    drawpic -cn @SysCtrl 0 0 $shortfn($scriptdirsysimg.png)
    drawpic -cn @SysCtrl $calc(51 * %b - 50) 0 $calc(51 * %b - 50) 27 51 27 $shortfn($scriptdirsysimg.png)
    drawpic @SysCtrl
  }
  leave:drawpic -c @SysCtrl 0 0 $shortfn($scriptdirsysimg.png)
  dclick:{
    var %b = $ceil($calc(($mouse.x - 1) / 51))
    If (%b == 1) run shutdown.exe -s -t 15 -f
    ElseIf (%b == 2) run shutdown.exe -r -t 15
    ElseIf (%b == 3) run rundll32.exe PowrProf.dll, SetSuspendState Sleep
    ElseIf (%b == 4) run shutdown.exe -h
    ElseIf (%b == 5) run rundll32.exe user32.dll, LockWorkStation
    ElseIf (%b == 6) run shutdown.exe -L
  }
  Close:window -c @SysCtrl
}