Getting A New Ip Address

Anyone know the run command prompt to find out what date your ip addy is released/updated?

I found this info before but I can't remember where I found it

it tells you the time and date that your ip was leased as i understand it if you have your cable modem unpluged around this time it will give you a new ip when you reconnect {an hour or so later}

If you are using windows, xp, start|run|cmd
then type ipconfig /all
it will tell you the lease date time and the expiration.