glassfish v3 error 404

[jesus]

Hi, i'm new using glassfish and netbeans and this is my problem:

I'm learnig how to use servlets, so i installed glassfish v3 as my web server at my laptop, so I started typing my servlet and my page html which was gonna call the servlet in the action property in a form. But I didn't know where the servlet was, because The ide orders the files. So every time I tried to call it, the web server threw 404 error. So please if some knows a solution please let me know. Note I'm using fedora and netbeans 6.8

thanks in advance