I love technology but I'm a bit dense on this.

So here is the deal.

I have almost everything in the house as Wireless N capable but currently only have a linksys cable modem and a linksys G router. I know that N is faster and plan soon to upgrade a few more products in my house as well as hopefully the router.

Here is the question: Can I get away with the 7 year old modem and just upgrade to a dual band (frequency) N router that won't kick everything back down to G if one thing on the network is G. Or do I need to go the whole upgrade modem as well as getting comcast to register the new modems mac id...(pulling teeth).

I asked some other friends and everyone just kinda scratched their head. My assumption is with a hard-wired router into the modem it should just act as the pipe.

Thanks for the help.