Batch file to restart SQL

Hey all.. I am wanting my SQL Server installation to restart its services at a time I define in the Scheduled Tasks feature of the server its on

I need help with command line commands to:
- Stop SQL Server Agent service
- Stop and Start SQL Server service
- Restart SQL Server Agent service

Thanks in advance

from the command prompt:

>net stop MSSQLSERVER
>net start MSSQLSERVER

>net stop / start SQLSERVERAGENT