"How to start a different task when other task stops" in windows xp.By using task scheduler it has to happen. either programmetically or through command line.
You will have to make the "if done, then start" logic within the task executable itself. Meaning, schedule a task that calls a batch file, VB script or PowerShell script. That script will call the command that you want (for example,
Other than that, there is no built-in capability to call another task upon successful completion of one within Windows XP (that I am aware of).