From Unsupported Thoughts:
Written with VBScript, this program will allow users with Windows 2003/XP Professional to schedule Automated System Recovery (ASR) backups. Set a few switches and put it in your Scheduled Tasks, and Automatic_ASR will create the ASR file, delete old versions and email the results to you. For a complete description and list of switches, open a command-line window, and run it with the switch. Version 1.1 may include unspecified updates, enhancements, or bug fixes.