Thank you Glenn for the tip on Join/Split \:\)
The function UtoA($UserName) does not work \:\(

Thank you ShaneEP for your input.
I agree with your solution: manipulate the string to replace special chars (such as é,è,ù,etc) by * \:\)

NTDOC, yes I like more fun and will do it myself! :P

Thank you everyone for your input and time.
I will post my results when I have something useable!