Can Not Connect To Websites

It was recommended in the internet explorer group that I bring this here.

Running WinXP Pro SP3 and IE8. I can not open the following sites with
either IE8 or Firefox.

Eagle River Nature Center

www.ernc.org

Mountainering Club of Alaska

www.mcak.org

I was able to access these sites using IE7. Router is a Netgear WPNT834. I
have posted on Netgear's forums but I am not getting any real help. I can
ping the two sites. If I by pass the router I can access the ERNC site but
have not been able to access the Mountaineering site.

I have tried playing with the MTU. I have reset and reinstalled the router.

If anybody can think of any reason why I might not be able to access these
sites I would appreciate hearing your thoughts.

We can eliminate the hosts file as a source of the problem.
--
Bill

Brought to you from Anchorage, Alaska.