Schedule a Progam to start and close at a certain time

[lasergecko]

How would I schedule a program to start at a certain time and then close at a certain time? (Under win XP)

 

[Calin]

Scheduled Tasks, there are advanced options like start at hour, every day or some days of the week, or of the month. Also there is some kind of "stop program if it doesn't finish in n hours)
EDIT: Start->Settings->Control Panel ->Scheduled tasks