http://www.icyphoenix.com/viewtopic.php?f=4&t=1276&p=9698#p9698
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fracs
Wed 07 Mar, 2007 14:19

CUSTOMIZATION - How To Enable Extra Characters In Username
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OPEN [b]includes/functions_validate.php[/b]

FIND
[code]	if ( !preg_match("/^[a-z0-9&-_ ]+$/i", $username) )[/code]

REPLACE WITH
[quote]	if ( !preg_match("/^[a-z0-9&-_ [b]Add here your new permitted charachters[/b]]+$/i", $username) )[/quote]

OPEN [b]language/lang_english/lang_main.php[/b]

FIND
[code]$lang['Forbidden_characters'] = 'Allowed characters for usernames are a-z, 0-9, -, _ and spaces.';[/code]

REPLACE WITH
[quote]$lang['Forbidden_characters'] = 'Allowed characters for usernames are a-z, 0-9, -, _ [b]Add here your new permitted charachters[/b] and spaces.';[/quote]

Bye.