How to setup title and postname different?

Hello,

I’m having problem in setting up title and postname different. For example, I’ve a post whose title is

How to eat banana

Above is the title of the post. Now If I use /%postname.php in permalink structure the post shows as

http://www.mydomain.com/how-to-eat-banana.php

That’s okay, but when the page loads, the title tag will also be “how to eat banana” and that’s what I don’t want. I want to change this to “How to Eat Banana – Complete Article on Banana”.

Can somebody tell me how this can be done? I want to do this for all the posts. In other words, the http://www.yourdomain.com/postname.php is okay, but the title should be what I want for SEO purpose. Help me brothers!!!