Using old Sky Modem with cable router.

I have Sky broadband through an old modem with an ethernet connection. My mate has a cable router he doesn't need and I was wondering if it will work with the Sky modem. Will the modem just issue an ip address to the router like a cable modem does or does the router have to be configured with pppoe?

Rob

The sky modem will issued a local LAN IP address to the cable router, so you end up with a double NAT.

If you are wanting to add wireless, then I'd suggest turning old router into a wireless access point e.g.

http://www.coolwebhome.co.uk/wap/configuring-wap.html

Thanks for the reply. The router is a Linksys WRT54G. I've set it from gateway to router mode and I can get the internet over ethernet but not over wifi. I've had it working before but that was with a Virgin Media super hub. I'm thinking of just installing DD-WRT firmware onto the router.