Win 7 Pro browser does not work on new SBS 2011

Environment:
New SBS 2011 Standard server; Sonicwall TZ100 VPN firewall
3 XP Pro SP3 workstations; 1 Win 7 32 bit workstation.

All four workstations were connected to a SBS 2003 Premium server; worked as well as SBS 2003 ever worked.

No problems setting  up server and Sonicwall.  Internet, email all work fine.  Have not tried VPN yet.

All four workstation - removed from old domain by changing workstation from domain to workgroup.  Added to new 2008 domain by running Network ID wizard at each workstation.  Could not have gone smoother.  Outlook 2003 and 2010 work great.  All proprietary company programs work great.  Internet Explorer works on the XP Pro workstations.

Firefox and IE 9 do not work on the Win 7 32 workstation.  I can ping IP addresses on the Internet; I can ping www.yahoo.com and get back a reply so I know DNS is working fine.  Windows Update works.  All critical updates have been installed.  I can access the default company web site and the Sonicwall admin program but nothing outside the firewall.

I have tried the following:
1)  Hard code the IP address & use the server DHCP. [Sonicwall DHCP turned off]
2)  Flush server DNS cache
3)  remove / re-attach to domain
4)  multiple complete shutdowns and startups of server, workstation and firewall
5)  different user IDs including system administrator

Have not broken out the chicken blood and garlic yet but I'm getting close.
CocosDadAsked:
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BAYCCSMSPCommented:
Did you check to see if you have some sort of proxy enabled on the win7 machine by mistake?
CocosDadAuthor Commented:
The browser was originally configured to go through the SBS ISA 2004 proxy however the box is no longer checked.  Is the old IE proxy information still buried in a cache someplace?
CocosDadAuthor Commented:
Resolved problem by using  the restore point that was created when the OS was first installed.

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CocosDadAuthor Commented:
The only choice left other than a complete re-install.
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