HI. 
i want to built a new cnc router,
but which cnc router kits your guys think is the best,
o any web-site you guys recommend.
thank's

** what stepper motors are the best,

** Stepping Motor Driver (Aslo called Stepper Driver)

** power supply

** Breakout Boards

Hi elpuebla,

It would help if you tell us where in the world you are located.

If you are located in the UK then these guys sell most of what you would need http://www.worldofcnc.com/
I have dealt with them many times and have had excellent service.

Tweakie.