The router seems fine, it's the dsl connection thats duff. 2 things: check the line itself actually works (stick an analogue phone into the splitter) and get the splitter looked at - maybe buy another one to see if it's faulty.
I sometimes have that problem when I connect to my desktop. I have to use a Belkin USB adapter to connect wirelessy but often have to "Enable Windows Zero Configuration" (WZC). This usually sits in the bottom right of my Taskbar flashing red on a computer icon which, when the WZC is enabled turns blue and has little signal signs coming from it. I'm still working on XP so I don't know if Vista has this.
Hope it helps
Nobody Steps On A Church In My Town. We're On A Mission From God. The Power of Christ Compels Me (to drink).
Hi..it may seem obvious but try re-entering your Virgin username/password.
Does it work if you run your computer in Safe Mode with Networking? Reboot and tap the F8 button till the boot menu appears, then select Safe Mode with Networking. If all works well there it would suggest some software is blocking the connection outbound...perhaps a software firewall.
Wish I could help more but i'm an adsl user myself.
It should be this way by default, but on the router configuration page, make sure it is set to use DHCP to get an IP address automatically from VM.
The setup should be coax cable from virgin wall box to modem - ethernet from modem to WAN port on router (there should be 4 ports together and one slightly apart on the back of the router) then either etheret or wlan connection to laptop or pc.