What actually "becomeroot_0.1-2_armel.deb" install do?

I tried to launch Kismet via Xterm on the device and i got error for Interface Wlan0: Permission denied.

This has to be that root access is not there.
I have done that (http://maemo.org/community/wiki/howdoibecomeroot/) root thing :

1. I edited the usr/sbin/gainroot for acordigly (MODE=enabled #`/usr/sbin/chroot /mnt/initfs cal-tool --get-rd-mode`)
2. sudo gainroot via SSH
2. I altered root's password with passwd via SSH.

Is this right?