I Choose in NetBeans 6.7.1:

"File|New Project".

In the "New Project" Dialogue box:

Categories - Web Projects - Web Application

and I create a Simple Web Application that's should print in a page "Hello World" but instead of that it doesn't load page and print's the following message:

C:\NetBeans 6.7.1\http:\localhost:8080\WebApplication1 contains an invalid path.

I have tried almost everything but i cannot figure out what's the problem.