Você pode usar o Agendador de Tarefas do Windows para fazer isso:
The Task Scheduler can be used to execute tasks such as starting an application, sending an e-mail, or showing a message box. Tasks can be scheduled to execute:
When a specific system event occurs. At a specific time. At a specific time on a daily schedule. At a specific time on a weekly schedule. At a specific time on a monthly schedule. At a specific time on a monthly day-of-week schedule. When the computer enters an idle state. When the task is registered. When the system is booted. When a user logs on. When a Terminal Server session changes state.
Aqui você pode ver um exemplo para começar a desenvolver sua própria tarefa "limpar arquivos torrent".