No, you can't do it. The CLR uses TLS in various ways that don't play nicely with SQL Server. .NETFX 2 and Yukon have both undergone significant work to resolve this issue.
Technology Toolbox: VB.NET, C#, SQL Server "Yukon" All versions of SQL Server prior to SQL Server "Yukon" provide two ways to write procedural code that executes inside the database. The usual way is ...