lucy24 - 9:04 am on Jul 18, 2013 (gmt 0)
Psst! Phranque! Come back!
No matter what you choose to do and how you choose to do it, one thing is sure: It can't be done in html :) So this is either an SEO question or an Apache question. Or, uh, That Other Server.
Rock-bottom easiest fix: If you are on shared hosting, putter around the control panel and find the "preferred domain name" setting. It won't be an optimal redirect, but at least it can start happening right away, while you take your time figuring out the ideal way to do it.