Seeing that you are a High school kid who may never have heard these terms, I'll throw out a few words related to your quest for a continuously running program that starts automatically.

Such a program is called a daemon in the Linux world, or a service in the Windows world.

There are several perl modules on CPAN that can help create programs that run in this manner.

If you pose a more specific question about what you are trying to do, what research you have done, and what problem you encounter when attempting to implement such a program, I'm sure monks here will be sympathetic and helpful.