Changing the SMTP server

I'm using Thunderbird 1.5.0.7 and cannot figure out how to switch the SMTP server over to the new company I am with. Adelphia was bought out by Comcast and today I got an email from them about changing over my email accounts to Comcast's servers.

I created all new accounts for each of my Adelphia emails with T-Bird but it never gave me an option to change the SMTP server and is using the "default" Adelphia SMTP.

How can I change this over to what Comcast requires?

 

Thanks, folks, but I located the SMTP option at the bottom of the local folders.

 

Way to go Kenney!