> 
> 	How can i do this :
> 
> 		setenv LC_CTYPE iso_8859_1
> 
> 	I got : setenv: command not found

I think the problem is that you are using sh, ksh, or bash. "setenv" is
a csh command, also used by tcsh. To do the same thing under sh, try
something like 

LC_CTYPE=iso_8859_1
export LC_CTYPE

Take care,

Bill