A simple HTTP server application for Windows that can be run on demand?

I need a simple HTTP server application that meets the following criteria:

• It should run on Windows.
• This does not require new installation of Windows of any kind: programs, frameworks, services, etc.
• It can be launched using Java (for example, JAR) or .NET, since these frameworks are already installed globally on servers.
• It must be able to run and on demand Ant build (and / or the command line) on demand.
• It should be able to host on the port specified at runtime (i.e. not in the configuration file).
• It should be able to host the main static content (JavaScript, CSS, Images, HTML) from the root directory specified at runtime (i.e. not in the configuration file).
• No huge distribution folder, for example. Jetty's full distribution is around 40 MB ... too big! Less than 1 MB was preferred.
• It does not need to support HTTPS (SSL).
• ITS DO NOT need to integrate with any IDE.
• He does not need to host any “web applications”, for example. EAR, WARS, JAR, etc.

Any recommendations? I will also need an explanation of the manual / tutorial to set them up, especially if they are based on Java, since I have very little background in Java (and, frankly, not much background in Ant).

Thank!