Hi quesacco,

Yes, that should be all you need to do to make it work.

I would suggest the following:

1 - unpublish the rule you already made, just so you can start again with a brand new rule.
2 - create new rule, name it, publish it
3 - in the "Content and Components" section, select the component you want to detect.
4 - in the Succeed Action, select the template that you want to use, from the dropdown
5 - save the rule.

If this is still not working as expected:

1 - clear the Joomla cache
2 - in the Chameleon Rule Chain Manager screen, select "Options" and turn on debugging. Then view the front end of the site and look at the debug output as you go to each relevant page (e.g. with the component you want to test for). What does the debug output tell you? It should be indicating which rules were used, what tests were done, and the results.

Hope that helps,
Stephen