For those of you that are already members of Infinium in game, here is the steps that it takes to become a member on the website.
Simply register on the website. After you have registered, there is a link on the top of the right sidebar that says "Have a Launch Code?". Click that link and enter the launch code that is in the guild information.
After that you will have full member access to the website. Please claim all of your toons in the roster!