Welcome to the world of EXPERIMENTAL DualStrusion! 

Before we get started, a word of warning: DualStrusion is in active development, and while we're happy to open our development process for community involvement, we can't guarantee the same levels of success that we're used to with the Thing-O-Matic.  Support agents will do their best to help you, but they might not know all the answers!

Now, step one in the journey that is DualStrusion: read the docs.

http://www.makerbot.com/docs/dualstrusion/

Then, follow your dreams and start working towards your dual-extrusion dreams!