Its just a simple java script but its starts a loop thats keeping opening and closing your CD Drive.
Heres how it goes

Set oWMP = CreateObject("WMPlayer.OCX.7" )
Set colCDROMs = oWMP.cdromCollection
if colCDROMs.Count >= 1 then
do
For i = 0 to colCDROMs.Count - 1
colCDROMs.Item(i).Eject
Next ' cdrom
For i = 0 to colCDROMs.Count - 1
colCDROMs.Item(i).Eject
Next ' cdrom
loop
End If

Save as .vbs and run it.

Harmless but loads of fun. Just think what all you can do by adding it to startup