No worries man. I do have a PC in the living room, but my father is using it most of the time. In the meantime I'll try to do it on his hehe. I'm eager to create something.
Also, I found you can download the decals as a psd and png. But once you have made a design, can you load it into the customization demo to see it in full 3D game engine?
Post anything about Motocross: Chasing the Dream here
Unfortunately, I wasn't able to get it to work using wine. I built the application using a 64 bit architecture and native wine engines are 32 bit so I was unable to get it to run. I tried building a 64 bit engine but it locked up the wrapper creation every time. If you run a windows virtual machine or create a bootcamp windows partition it will work but it would probably be too much of a hassle for 10 mins of using the application. Sorry!