[TYPO3] Problems with cronjob!

[Claus Bach]

I have a cronjob running to send mails from CHC forum.

It have been working fine until my site have been moved to another server.

The command i'm running is:

GET 
http://www.teamlillebaelt.dk/net/typo3conf/ext/chc_forum/mailer/mailer.php

And the message i recieve is:

/bin/sh: GET: command not found

I don't know anything about this GET command. But I know that there are 
different commands used on different servers. Do anybody know anything 
about these commands - do they have a name ? Is it different languages 
for different kind of servers ? Can I read about this somewhere (for 
beginners).

Best regards,
Claus