stepper motor connection and programming

I'm going to start a project using AT89C51. I need to use bipolar stepper motor. Can any one plz say me how to connect it using ULN2003 and its assembly language programming ?

I have been working on a stepper motor project also. I can't help you with the programming, but here are a few good links I have found on stepper contol in general. The first link has a ULN2003 used in the driver so you can see how the connections are made. They are showing a unipolar motor, so it won;t be exactly like your bipolar, but you can get an idea.

Stepper Motor interfacing with Microcontrollers tutorial: Connecting Stepper Motor : 8051 Microcontroller Projects AVR PIC Projects Tutorials Ebooks Libraries codes

2 other great links for steppers.

Stepperworld Bipolar Tutorial

Jones on Stepping Motor Types

Someplace I have seen a schmatic with a ULN2003 driving a 4 wire bipolar motor. I can't find it at the moment. If you google enough you'll run across it.