CNCzone    A nice forum with tons of info.

Automation Direct    Great source for stepper motors, I suggest the 272oz-in motors.

Gecko Drive    The best stepper drives around.

Xylotex    Lower cost stepper drives

Hobbycnc    More lower cost drives and steppers.

Artsoft Mach1/2/3    Of the best controll software

Turbocnc    Best shareware controll software

Keling Inc    Good source for Motors, controllers and powersupplies