located in user registration settings I would like to edit the spacers allowed in the setting below
DEFAULT:
Limit username chars:
Restrict type of characters that may be used in usernames, spacers are: space, -, +, _, [ and ].
I would like to limit it to just a dash - and underscore _
I realize I might have to get into the database, but Im hoping its somewhere in the language or other easy to edit file
Thank you for your help