Help Changing 'default action' apps back to default?

[hellspawn69]

Wasn't sure exactly how to ask this, but here we go-

So, for example, I installed "Dialer One", a dialer replacement.
So whenever I hit the "Phone" button, it asks how I want to complete the action. Using Dialer One, or Phone. And it gives me the option to "Use by default for this action".

So, lets say I want to use Dialer One by default, but then I change my mind. How do I set it back to the default Phone.

Obviously, this question applies to more than just the phone app. After writing all that I think the simple way to ask my question is- I really just want to know how to undo the 'use by default for this action' choices I may make in the future.

Thanks!

 

[lopezpm]

Menu, settings, applications, manage applications, give it time, click on application and clear defaults.

 

[hellspawn69]

Thanks lopezpm!