Ok, I just realized that I can just replace all of the UB backgrounds with the different tables (duh), so you can just switch between tables as you normally would switch backgrounds. BTW, none of the UB backgrounds will look right with the green dot/no chairs mod.
Again here is the green dot / no chair mod:
http://www.megaupload.com/?d=PWGBJS70
And this DLL includes these tables:
http://www.megaupload.com/?d=LJ5N8ZX3
