If you have already 
            registered using this Username... you need to go to the member login page - even if you 
            have not fully completed your profile yet. 
            Your Username is your unique public alias on our site and is how other members will know you. It protects your confidentiality and you use 
            it with your password to log in to our site. So choose 
            a good one and make sure you remember it! For confidentiality, 
            it's not a good idea to use your full name e.g. MaryBloggins 
            Numbers (0-9), 
            lowercase characters (a-z), uppercase characters (A-Z), as well as 
            underscore ( _ ) and hyphen ( - ) are all OK to use. All other 
            characters can't be used. Unfortunately you can't use the ordinary 
            space character - so you cannot be "il postino" but you can be 
            "il_postino" or "il-postino". 
            It can between 3 and 16 characters long and 
            should be easy to remember. For example members can be known as 
            'alice', 'highlander' or even 'bignose' if you wish. If your desired 
            username is taken you can always try a variant - e.g. 'alice17' 
            or        
            'highlander53'.