Moving from wordpress.com to wordpress.org, Please try reviewing these resources:
- http://en.support.wordpress.com/moving-a-blog/#moving-to-wordpress-org
- http://wordpress.tv/2012/02/13/georgiana-laudi-sandy-sidhu-moving-from-wordpress-com-to-wordpress-org/
- For further help, please visit the wordpress.com support Forum: http://en.forums.wordpress.com/