A few things about ASP.net and mod_mono

• Mono supports all of ASP.NET 1.1 and most of ASP.NET 2.0 (currently missing WebParts and a few other small features of 2.0).
• ASP.NET code blocks start with <%, and end with %>
• ASP.NET is not the same thing as ASP. Files ending in .aspx will work, those ending in .asp will not.
• Check here if you don't know where the path to your Mono binary is: /usr/bin/
• Does mono run on Linux? Yes.