Most Perl books include this program along with directions to store it in a file (I am assuming 'hello.pl') and execute that file. This is intended to verify that perl is installed correctly and that you understand how to run it. You indicate that you have passed this test on your windows computer, but are having trouble on a second computer. If the second computer is also a windows computer, there probably is a difference in the installation. We can help if you tell us how you tried to run the file. Did you click on the file icon, type hello.pl, or type perl hello.pl? Please, also tell us what did happen. Did you get an error message? What was it? Did the cmd prompt return? Did a strange window appear briefly? I also recommend that you try to check the perl version. Type perl -v. Again if this does not work as expected, tell us what did happen. While you are waiting for our next reply, you can experiment with the other ways of running your file.

If the second computer is not running windows, we also need to know anything you can tell us about its operating system and perl. Are you using the perl that was shipped with the OS?