Useful tut on making your own wordpress themes.
http://www.wpdesigner.com/2007/02/19/so-you-want-to-create-wordpress-themes-huh/
Ryan's Tech Blog
http://www.wpdesigner.com/2007/02/19/so-you-want-to-create-wordpress-themes-huh/
http://wordpress.org/extend/plugins/wordpress-automatic-upgrade/