Put this attachment (it is an mdl) onto desk top Make sure both textures are there also. Open the mdl in Model Converter X click the arrow for animation. You can switch over to night view also if you wish.
Now- you can add this in Library maker for Instant Scenery to make it a BGL and put this new library (of one item) into your scenery and put the textures into the corresponding texture folder and viola - you're done.
Or put the mdl into a mdl folder then go to ADE and load it into your list of mdls then place it that way. Mostly likely you know all that stuff.
This is one I made. Want to know how? answer here and/or find me (Robert Lacy) on Skype.