On orange? It will take some time in which to re register for the broadband and then if you use the wireless and talk package you would have to wait at least 10 days in which everything would then be set up (ie getting the modem, activation and the establishihn a connection to the home phone line. I would probally say it better just to go to your library or a freinds house, That way you will get onto the internet quicker specially if you want to get on today.
Why did you cancel your account anyway?
Hope this helps