Because they are separate things, you will have to register for all, once at a time.

It's disabled due to space. It will stay that way.

There is no other way for you to register than do so on the Gallery, follow the register button and it'll guide you step by step, if you have further problems, feel free to contact me.
* If you already registered and can't login, send me the username you chose and pass and i'll check that for you.
* If you can't register at all, then the problem doesn't come from the script as everyone can register fine and the only problems you can get are login problems, for others i'm sorry but i can't tell you anything more than to try again.
Let me know how it goes ;)
* If you really can't, just send me the name and pass you would like and i'll register an account for you, then you'll login and change your password if you like.
Also be aware that there are a bunch of people registered already so chose a complicated username lol, but one you'll remember ;)