I tried your hack, however this is not enough. What I really worried is the link below:
http://mylittleforum.net/forum/index.php?mode=user

That is OK if a user want to check an individual user's detail (probably they want to communicate to each other). But I don't like a user can see the list of all other users.

1) How to change so that only admin and moderator can see the list?

2) Is it possible so that the user can chose not to display the details?

Thanks!