Airport Extreme won't connect to internet
Just bought an Airport Extreme to replace my Linksys Wireless G router. Am setting it up with the same SSID and password as my previous one and tried to do so as a 'new wireless network' and also as 'replace an existing network' but have had the same issue with both attempts. The network sets up fine (my NAS appears), but I can't get onto the Internet. It says it can't find an IP address and if I go manual, it also wants DNS servers. My internet provider assures me these should get picked up automatically by the router (and I seem to recall the Linksys doing so), but for some reason the Airport doesn't get it. I've reset it several times, I've unplugged the modem/router, etc. several times all with the same results. Is it a possibility that it doesn't want to play with my aging modem? I've got a Toshiba PCX100U that's 10 years old, but still working well. I'm at a loss and about ready to call Apple, but figured I'd try the community first. In the meantime, I'm back on my Linksys. Any help would be appreciated.
I'm setting this up from a Macbook Pro running 10.6.8 (yeah, I know, time to upgrade - trying to get thru a few games that aren't compatible with Lion and later first). I think my Airport Utility is 5.6.1 (looks like it was updated in June of this year).
Thanks.
Lisa