Registering with your main alias is just as easy as it is with any other forum. You only ever need to log in with one account. To make multiple accounts, subaccounts, all you have to do is go to Profile->Modify Profile->Manage SubAccounts, and click 'Create/Link' to make a new profile for your character.
Once the character profile has been made, all you have to do when posting is use the drop-down list beside 'Use Account' and choose the account you wish to post as. By default, it will post as your parent account, which will be the first account you make, which should be your OOC alias.
You can customize each account to suit the subsequent character it's used for, and you never have to worry about logging in and out to post as different characters. And for OOC topics, you of coarse can just use your parent account, which will be named after the alias that we will henceforth come to or already know you by.
