Firefox and IE not working on Windows 2003 Server Sp2 (was working for a year)

I have a Windows 2003 server which runs as a terminal server.  Users sometimes need to go out to a web site.  Firefox and IE were working for a year, now neither work.  Firewall on server is not enabled, firewall on network is not block http for any computers.  I re-installed sp2 just to try it.  I tripple checked DNS settings.  I can even drop to a command prompt and ping www.yahoo.com and www.google.com so I know dns is working.  I ran a virus check and spam check.  I do not want to reload this server for this silly issue.  Please help.
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mbarry8859Asked:
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JoWickermanConnect With a Mentor Commented:
Oh!!!

Are you sure port 80 is not blocked? If it won't even open internal pages, then the only reason can be that port 80 gets blocked! Might be 8080 as well. Check your IE proxy settings to see which port is used.
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JoWickermanCommented:
Hi mbarry8859,

In Control panel under Windows components, is the Enhanced IE security function installed? If so, uninstall and test.

Cheers.
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mbarry8859Author Commented:
First thing I check.  That is un-installed.  I checked again to be sure.
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JoWickermanCommented:
Hhhhmmm... Strange... I guess your proxy settings are correct?
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mbarry8859Author Commented:

Yep, very very strange. I can't even pull up web pages of the copier inside the firewall/network. The only web site I can pull up is my sonicwall router, and only if I use https

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