Create a zip package in MODx.

I am facing a problem with creating a zip package for MODx module, I am not really getting a good article on the web where I can get this solved, it would help if you can show me step by step for creating a zip package for a module so that i can use it at multiple websites.

When installing the package I need to create a new system variable. Please let me know how that can be done as well. I appreciate for your replies, thanks in advance.

Good tutorials here:

http://rtfm.modx.com/revolution/2.x/case-studies-and-tutorials/developing-an-extra-in-modx-revolution

http://rtfm.modx.com/revolution/2.x/developing-in-modx/advanced-development/package-management/creating-a-3rd-party-component-build-script

MyComponent will do that for you, though it may not be worth the trouble of getting up to speed on MyComponent if it's a simple package.

http://bobsguides.com/mycomponent-tutorial.html

It will create new System Settings easily.