they do.. they must.. with the right configuration.. try calling your internet provider..
right click on the local area connection then properties.. uncheck the IPV6 place check on IPv4 then double click IPv4.. make sure that obtain ip adress automatically is marked
try ipconfig/release then ipconfig/renew on the command prompt
if it doesnt work.. try clearing dhcp / restarting dhcp
type in services.msc at the command prompt then search for dhcp clien list.. click stop then restart.. or restart first then start