same here....

basically i want this for two things. 1 is exactly what you want, so that they sign up for say vbulletin and their email also goes to a mailing list script as well.

Secondly, i want to be able to put some code into someone's elses of server script (that does NOT do mysql itself with username and password) that sends some info to say register2.php (to be made) on my server that adds the info to my database?

ie.

1. user goes to http://www.friendsdomain.com
2. user fills in form to sign up for friendsdomain.com
3. form contains username and email etc.
4. presses submit
5. goes to http://www.friendsdomain.com/processform.php
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6. Now i want that info to also be sent to http://www.mydomain.com/register.php so it can deal with it.
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7. user sent to http://www.friendsdomain.com/thankyou.php