I went to that link, put in a random name for a wallet and a password and I can't click create. Anyone else having the same problem?
I did find a page that said "New to Ripple? The Ripple Wallet is still in limited beta, let us email you when it is ready for a sneak preview!"
https://ripple.com/wallet/*EDIT* I found out that not all passwords work. I tried a really complex password and they matched but it didn't work. So I tried 123456abcd### as the password and it showed the create button come up. So I put in a different realistic password and I was able to create it. If one doesn't work try another one.
Remember after you get an account go to
https://bitcointalk.org/index.php?topic=145506.0 to sign up for free ones.