Winsock Error or Host File Problem?

Hi,

I've got a Win98 (first edition) that's been running fine. But, today I
can no longer connect to the internet. I use Comcast Cable.

If I try to ping a URL by name, such as www.yahoo.com, I get Unknown
Host. If I ping yahoo by IP, I can reach it ok. Therefore, I thought
this may be a DNS problem, so I hooked up another (XP) machine to the
modem, and I can get on the internet fine, and I can ping by name or IP.
So, there goes that theory.

I called Comcast and they told me it was a Winsock problem, and that
Win98 in notorious for this. They said to call Microsoft and have them
walk me through fixing it through the registry.

I've never had any Winsock problems with Win98 ever since it came out,
and I've never heard of fixing something like this through the registry,
so I removed and then added (via Network Properties) back the TCP/IP
protocol.

I still have the same problem. Any ideas why I can ping an IP, but can't
ping a name with this machine, if it's not a DNS problem? Is there a
host file that may be involved?

Sincerely,
Bruce