The links to 'An Overview of SQL Server 2005 for the Database Developer' and 'SQL Server 2005: The CLR Enters the Relational Stage' are broken. I found these aritcles on msdn though, for anyone who's interested:

An Overview of SQL Server 2005 for the Database Developer

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnsql90/html/sql_ovyukondev.asp

Using CLR Integration in SQL Server 2005

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnsql90/html/sqlclrguidance.asp