Cisco PIX 506E VPN RADIUS SETUP Migration from Windows 2003 to 2008

We have a Cisco PIX 506E VPN RADIUS SETUP which we migrated from Windows 2003 to Windows 2008 server.  Is there anything we need to change in the PIX other than our DNS servers changes?  Active Directory was imported and everything works internally except our VPN, authentication failure.  It worked perfectly on Windows 2003.  Any suggestions would be greatly appreciated.   Thanks.
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I assume you using the Network Policy Server (NPS) on your Server 2008?
Have you followed the NPS Wizard which is located on the top of the NPS mmc console tree to configure your VPN rules and Radius Clients...?

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tech-Author Commented:
We have setup the PIX in NPS and it is not allowing users to authenticate...
Whcih settings did you in detail?
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