J. mp wrote:
> Hi folks,
> I'm burning my head because i don't understand how regular expressions
> works
> 
> I just want to validade a username wher
> username ->valid
> user.name ->valid
> 
> everything else is invalid

  Just to get you started:

  /[a-z]+(\.[a-z]+)?/

	Vince


-- 
Vincent Fourmond, PhD student (not for long anymore)
http://vincent.fourmond.neuf.fr/