windows xp system also comes with a simple task scheduling application, you can "start" -> "All Programs" -> "Accessories" -> "System Tools" -> "Task Scheduler" -> "Add Scheduled Task" in turn up.
The comparison between the two:
(1) Windows scheduled task is simple to use, may not need to write code directly assignments (tasks provided in the form of an executable file). But relatively poor flexibility, scalability is not convenient in terms of support and supervision tasks.
(2) Quartz.Net the API is a relatively simple, but requires implementers have some c # software development experience.
(3) Quartz.Net better scalability, portability aspect, it is a programming interface, and can be monitored in real time based on job performance.
(4) Quartz.Net job can be stored in the RAM, it may be stored in a persistent database.
(5) Quartz.net can create fault tolerance and load balancing between multiple computers. and many more.
As for other operating systems scheduled task, and then later update.