definelty check your cables/ pull the power on the DSL modem, and Router.
wait a few mins power the modem, wait then power the router.
check for status lights on the back of your NICS, what lights are lit?
go to start-run-cmd-ipconfig
are you obtaining an Ipadress?
if you are ping that address. type "ping ***.***.***.*** "
(whatever you IP is)
if it pings your own IP that means your NIC can talk to its self.
see if you can get out to the internet. Like www.google.com
let me know what happens.