While looking around for possible hosting options for ASP.NET 2.0 and SQL Server 2005 I ran into the following:
https://www.hosting.com/hosting/microsoft/microsoft-hosting.asp
They offer a kind of experimental (beta plan) hosting for only $1 and no monthly fee. In their detailed beta plan report they say that they can stop the service any time so I (like them) wouldn't recommend to run there a live website. However for testing purposes this could be an option.