This is a common request due to the fact that the GAT-generated guidance package contains lots of stuff in it (and most of them not-very-useful at all). This is the reason why we added a new Create Solution wizard in SFT where you get asked a couple of questions and you end up with a pretty clean solution (no unwanted stuff at all) to start working on. If you want to try it you can download from http://softwarefactoriestoolkit.net
If you want to start from File->New Project and want to learn all that's necessary to write a gudance package from scratch there was a post from [I can't remember right now!] that list the several steps you need to get a skeleton working solution. You should be able to easily find it if you google it.
HTH,
-Victor.