MS have released a white paper describing what .Net Framework scenarios and enhanced features are supported for Service Pack 2 of both Windows Sharepoint Services and Sharepoint Portal Server.
In brief,
|
Windows SharePoint Services with SP2 |
SharePoint Portal Server 2003 with SP2 |
| Ability to run on Microsoft Windows Serverâ„¢ 64-bit versions |
Yes |
Yes |
| Use of Microsoft SQL Server 2005 |
Yes |
Yes |
| Improved extranet deployment options |
Yes |
Yes |
Support for the Microsoft .NET Framework 2.0 Common Language Runtime (CLR) and ASP.NET 2.0 |
Yes |
No |
Check it out Here