A LAN is simply a network. It could use any type of internet connection, even a dial up. You should ask where you are.
OR Go here:
http://www.adslguide.org.uk/tools/speedtest.asp OR/& here:
http://www.t1shopper.com/tools/speedtest/ to test your connection speed. The last link allows you to choose a particular country nearest you for doing the test.
See
http://www.gnutellaforums.com/showth...034#post114034 to get an idea of the official speeds of T1 & T3, etc for LW.