The annual MSDN Security Issue is now out, in addition to containing my article on hosting untrusted code, it also has one by Mike on What's New With Code Access Security in the .NET Framework 2.0.  We worked to make these two articles fit nicely together -- Mike focuses on a higher level overview of sandboxing and hosting, while I dig into some of the specifics of how you would go about actually implementing the code.

Guess it's time to run out to the bookstore and buy up a stack of these :-)