Ubuntu 12.04 i386 server with ubuntu-desktop installed. I have install gnome-ppp/wvdial and if I

gksu gnome-ppp I can connect and all is fine except the gnome-ppp window closes
in the terminal i see the pppd process start and it report the process number. When I am done with the internet i

sudo kill #pid

I would like a better way of disconnecting.

FYI should it in fact mater the modem I have is an external serial port 56k USBRobotics Sporter modem.