I don't intend to start a flame war, but I would like to recommend maybe using Mono on Linux instead of .NET on Windows. http://www.linode.com has some fantastic servers, I use mod_mono on Apache.
I apologize for not answering your question directly for I have don't have any experience with Windows or Windows hosts for that matter. If Windows is a MUST I apologize that I could not help.
I apologize for not answering your question directly for I have don't have any experience with Windows or Windows hosts for that matter. If Windows is a MUST I apologize that I could not help.