On the most basic dumbed-down level: Put all the subs in a single file. Name it my_subs.pm. Make sure that the last line of the file is this:

1;
That's a one, not an "L", BTW.

At the top of your perl script, put use my_subs;

This isn't an optimal solution by any means, but it will work. From there, you'll want to read the chapters on Packages, Modules, and Objects in the Camel Book.

-Logan
"What do I want? I'm an American. I want more."