I want to thank for those of you who gave me tips to solve my problem.
I want to schedule a DIALUP connection to my ISP. To do that Iīve used Kcron (or something like that) in KDE (I use LInux Conectiva 7.0). Than i configured the day, the hour, and so on. But, still, it havenīt function. If anyone knows what to do then. I thank you very much.