There is a plugin called Automatic Subdomains which maps sub domains to wordpress pages or posts.
How to use sub domains in wordpress
The above link has more information on it and also explains how to extend it to also map to authors.
Hope it’s some help
I’ve put the code on the following page, it will do the author redirection.
If you still have a problem with this plugin, check out this post on using Automatic subdomains plugin in workpress
Hope it is some help
Hi junkfood
I have modified the plugin to work with author names.
I have yet to get in contact with the original author of the plugin to see if I can repost it or not.
You can check it out on my site jon.passiveincomereality.com. in the mean time if sure if you dropped your email into my contact form I could sent it to you.
Jonathan
