question connecting fedora to comcast

[Tatara]

I just upgraded my home pc from Fedora Core 2 to 4, and I still can't connect to the internet, even though I can after booting Windows2000 or Knoppix/Suse Live CDs.

The pc is hard-wired to my Linksys router (wrt54g), then to my Comcast cable modem.

Reading from my Red Hat Linux 9 Bible, I tried the Internet Configuration Wizard, with no luck.  None of the device types (ethernet, isdn, modem, token ring, wireless, or xDSL) seemed to be good matches, but I tried xDSL.  Eventually it gave me a device name ppp0, but it wouldn't activate.  Another device (eth0, with type ethernet), wouldn't activate either.

Now I'm lost.  Any suggestions?  I'd like to stick with RH if possible.

Thanks,
Eric
(network newbie)
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