How do I change the cron?

[Stanislav Okhvat <stanis sibfair nsk su>]

Hi!

Once every day, there is a process that starts and runs exactly one
minute. In the running processes window, it is called
/usr/bin/updatedb. Takes about 33% of all resources on a 64 Mb
machine. Is it vital for the system? Can I exclude it from the list of
tasks? Is it to be edited in Cron and how?

Also, does anyone know how to configure right-click file handlers
under Gnome, such as Open with Emacs... / Open with Gnotepad...?

Thank you immensely in advance. Also thanks to everyone for helping
with the sound problem!

Stanislav