>But sometimes, I can use the viariables, sometimes
>they are null. (I use reload in my browser)
Every time you hit Reload, a different Apache child handles your request. A
very good way to understand the Apache model is to read the "Writing Apache
modules with Perl and C" book, from O'Reilly and Associates.
>Any differences in Mod_perl with Cgi-Perl????
Yes, quite a lot of them. For variables scope, see
http://perl.apache.org/guide/perl.html, but you might also be interested in
reading http://perl.apache.org/guide entirely.
Vic.