Hola Alexander,
Bienvenido al proyecto, actually contributions will follow any path that works for you. Let me suggest :
Path A./
1.- Get templates from source code from
SourceForge.net SVN 2.- Get templates from source code on your XMLPortletFactory local installation (resources folder).
3.- Make the changes to support AUI and test them. (If they can be for 6.1.x and 6.0.x great)
4.- Email (jack.a.rider at xmlportletfactory.org) or post them in forums.
5.- I will upgrade SVN with your changes and include them in next version.
Path B./
1.- Get a portlet source code generated by XMLPortletFactory and make all changes you need to get AUI working.
2.- Send me the xml definition file, and the modified code (so I can trace the changes made)
3.- I will upgrade the templates and upload to SVN and include them in next version.
If you use path B, will be desirable you use one of the examples on the web, because I already know them, or use a not to complicated xml definition.
Saludos, Jack.
Pd.: hope to get news from you soon.

Be carefull if you get source code from SVN, is a working copy that is not tested on all scenarios.
If you have to choose to work with 6.0.x or 6.1.x, go for 6.1.x, there are features only available on last version.