I got in - finally. Two things for those who cannot get in:
1) It wasn't telling me that I needed Java but I tried another computer that had it installed and got through.
2) Once you get to the letter page saying your keys and shit have been upgraded, you might have to change your screen resolution to see the continue button at the bottom.
I'm not a computer expert or anything but alright. Newer versions of interent providers like Netscape and Explorer come with Java built in. Java is just a programming language and if you don't have it installed with your provider than you won't be able to read stuff that's coded in Java (I guess Hushmail codes in Java). Not sure if that answers your question or not but if you have Java already installed than that shouldn't be your problem. My problem was that I was using a Unix machine with a Unix version of Netscape and it doesn't come with Java. Hope that helps and feel free to add to or correct me in this post anyone who has a more thorough understanding of Java.