How to generate test-output folder from unit tests?

How to generate the test-output folder for a testNG test?

I am trying to get the default testng report, index.html

Netbeans7/windows7

I made a simple testng test case, ran it in netbeans 7, and here is the result. I see no test-output. I am displaying the project and file structure.

If I need to do something with ant or maven, please describe VERY detailed steps as to how to proceed on Windows 7 -- I am new to both of those tools.

If I need to do something with build.xml, please give explicit, detailed steps