Without using any automatic hosting feature (and then waiting) you can directly edit .htaccess file and quickly redirect all your non-www URLs to www URLs.
Thinking of migrating your blog to WordPress, here are 5 cool plugins that can help you doing that in a better and easy way possible and ofcourse I am takling about WordPress.Org self hosted blog not WordPress.Com. If you are migrating your blog from Blogger then you must read this post.
New WordPress plugin provides you a user friends and very simple redirect editor for managing redirects. It gives you a simple test area for editing
.htaccess-style 301 redirects, one per line.
301 redirect is a permanent redirect whereas 302 is a temporary redirect. Permanent redirects tell search engines that old URL is out so that they can pull this new URL in it’s place. 301 is used when you want to preserve the page index and keep the page rank.