How do you set the X-Drive up? i mean how do you configure the base.
You use the 45-degree angle gussets to connect the metal. I would recommend doubling up on the top and bottom for stability. If the building is unstable, the drive will tend to go in one direction more than another. The basic X-drive code is circulating around the forum.
would the code for it be the same as Mecanum???
Yes.