For Module::SomeModule to load correctly, the following has to be true:

1. There is a file called SomeModule.pm in a directory called Module. This is stackable. Thus, One::Two::Three means that the One/Two/Three.pm exists.
2. Within SomeModule.pm, there is the following line:

   package Module::SomeModule;
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3. The directory Module is within one of the directories listed in @INC.

You can modify @INC by doing the following:

use lib '/Parent/Directory/Of/Module';
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That's the cleanest way of specifying a directory where you want a set of modules to live.

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We are the carpenters and bricklayers of the Information Age.

Don't go borrowing trouble. For programmers, this means Worry only about what you need to implement.