How do I change my email default from outlook to yahoo?

For example, if I try to respond to a Craigs list ad, my computer automatically tries to use outlook. I want it to default to my yahoo address. Any help is greatly appreciated!How do I change my email default from outlook to yahoo?
Easiest way? Use Yahoo! Mail on Firefox 3. When you do, making Yahoo! Mail your default mail application is this easy:

(download firefox from here--http://www.mozilla.com/en-US/firefox/)



1. Click Options.

2. In the pull-down menu that opens, select Set Y! Mail as default webmail.

3. Next time you click on a mailto link, you'll see a pop-up asking you which email client you'd like to use ( Yahoo! Mail), and if you'd like to make that selection permanent. Click Yes, and you're all done!



If you use Internet Explorer...



The tiny program that allows you to select Yahoo! Mail as the default email application for your PC is included as part of Yahoo! Toolbar version 7.2 and up for Internet Explorer (not Firefox).



If you don't have Yahoo! Toolbar v.7.2 or later for Internet Explorer installed, you’ll need to download it before proceeding with these instructions.(Download Yahoo! toolbar from here http://toolbar.yahoo.com/ie )



Here’s how to set your PC to open Yahoo! Mail when you click an email link on a web page.



1. From the “Start” pop-up menu in the lower left corner of your desktop, select “Settings” %26gt; “Control Panel”.

2. In the Control Panel, select “Internet Options”. This opens the “Internet Properties” window.

3. Click the “Programs” tab along the top.

4. Click the “E-mail” pull-down menu, and select Yahoo! Mail.

5. Click OK. Done!How do I change my email default from outlook to yahoo?
'control panel%26gt;default programs' set ure default mail handler
Kelly try the 'Tools bar' at the top