WordPress Post Image auto set to featured image

Hi wordpress’s professionals Friends i have 100+ post in my blog all post have 1 attached image i want my all post attached image as set to featured image automatic means is their any peace of code that i use in functions.php the code change all wordpress post attached images to set as featured image. please i need your help If their is any possibility.

Thanks

...and here’s the DYI way: http://wordpressapi.com/2010/12/20/set-post-image-featured-image-automatically/

Google is your friend, my friend

Seems wAOn to mee have to try

digitalimpact said
http://wordpress.org/extend/plugins/auto-featured-image/

...and here’s the DYI way: http://wordpressapi.com/2010/12/20/set-post-image-featured-image-automatically/

Google is your friend, my friend

WAOn that’s what i want, Thankx a lot DIgitalImpact oooOHHHHH yes its digitally impact to me

Glad to help