Sky Broadband (Sagem router) won't connect?

My telephone line has been transferred to sky today so had to remove my trusty old sagem 800 for a new Sagem router.

Running Vista the PC will not recognise the router, everythings plugged in correctly without doubt, all the correct lights are illuminated on the front. But the PC will just not identify the router, any ideas?

To prove the router is working I connected my 2nd pc (xp) through the 2nd ethernet port and here I am on yahoo answers.

I assume you have tried swapping the known good cable (and thus also the known good router port) from to the XP PC, to the Vista m/c, to no effect ?

If so, the problem is the PC (not the router** or cable).

All I can think of is that the Vista ethernet hardware (Network NIC) is having a bad day .. go into Device Manager and check for 'yellow triangles' .. check driver settings (everything 'auto')... check also the TCP/IP Properties (IP address / DNS should be 'auto detect' etc )

**assuming you haven't set-up MAC Address filtering (on the router) that is ..

PS If you are not using WiFi, turn it off at both your router and PC .. Vista may be stuck trying to connected to your neighbours 'home hub'