Simple Network Traffic script

[Tim Traver]

Hi all,

ok, this may be a dumb question, but does anyone know where I can find a 
simple script that shows the network traffic to and from your local box ?

using netstat -i 5,  can see the traffic over 5 seconds, but then I need 
to do a bunch of calculations to try and get a reasonable number.

I looked at ntop, but couldn't get it to work...

there must be a simpler way...

Thanks,

Tim.