I released just now XYZ-DC Motor Control
, a complete controller board working with arduino (at least duemilanove board) to manage up to three Stepper Motors and one DC-Motor with heating control (temperature sensor and fan cooler), EEProm memory to store parameters and configurations, LCD display and a set of macro commands and more.
I think that its main interesting aspect is that this is a complete board with a very small price.
See more on Arduino Playground
and on the Main Project Page
This project is part of - in progress - XYZ-Stepper
, the milling machine project based on Arduino.