I would suggest that you don't use their names at all in generating there login `name'. You can simply use a number It does take 9 or 10 digits if you want everyone in the world to be able to login. But your base is likely much smaller.

As you stated, your users are not going to be able to remember their name anyway, so it will be just as easily fo r them to remember a number. Ten digits is the same number of digits as a phone number, so it is not really that hard to remember. Now you don't have the problems of people with name like Sam Hit or the 300th Joe Smith on the system. Allen