It's possible with Sketchup, which has many custom displays in the user library. It doesn't have all the bells and whistles like internal lighting, vector graphics and textures, but you can model your example with little training and make a reasonable presentation of your plans. This is by far the easiest drafting program to learn.
A Google image search for "Sketchup Tradeshow Display" will show you many examples.
Aside from the above mentioned AutoCad and 3D Studio Max there is also Solid Works. It is equally expensive and complex but capable of great results. 2D exports from any of these programs can be further rendered with textures and shadows with a program called Key Frame.
I recommend you look in the Sketchup 3D warehouse where users have submitted models for sharing. Not only are there complete tradeshow displays, there are also collections of pre-made modular parts. Use the parts to assemble your booth and be sure that it can be easily fabricated with the pieces used. Some types of modular display systems are Gem and Octanorm. Build your model with standard pieces of these systems and then you can build the real booth with the standard pieces.
Also provided in the 3D warehouse are a full assortment of tradeshow decorating furniture: tables, chairs, clip lights, monitors, stands, signs etc.
Applying your demonstration graphics and lights is not too tricky in Sketchup, and there are many video tutorials available.
