[Maypole] How to create the file ISellIt::Product

[Kfir Lavi]

In the tuturial at perl.com i read that to add a view_picture
I need to create new file and write in it:

package ISellIt::Product;
    sub view_picture {
        my ($self, $r) = @_;
        # ...
    }

Now:
What name should i call this file, and how the driver file ISelIt.pm
will know about it.

What i did but didn't work:
Created directory named ISelIt
In it i put the file Product.pm which have the code above.

Is this the way?

Tnx
Kfir