here's how a few clicks you can register on NAC-addiction, the aquarium and terrarium forum .
they just you, follow the instructions and point red .
1) on the home page
click on S'enregistrer (red point) register in English
2) click on accepter le réglement (red point) accept the settlement in english
3) fill in the required fields with the information written in red.
4) confirm your password, and writes the letters and numbers you see in the white frame and click registration (red point)
You are now register
to connect it is very simple
click on Connexion (blue point)
and you enter your name and password
you are present to connect to the forum and can use
additional support here ... http://nac-addiction.forum-pro.fr/t168-your-first-steps-with-us