IGG Service
Self Service > Submit Issues
Choose Game = Angels Online
Choose the Question Type = Reset Pin / Trade Code
Then you'll be directed to another page where it asks you to choose what pin to reset.
Shortcut for the lazy bums
In any case, you'll need a valid e-mail for it. You'll be sent a mail and you'll need to click on a link that you should receive in your registration e-mail address. Once you click that link, your pins are deleted and you'll need to log in on your account.
As for your second query, you can use the Search Button for that.
And please do NOT double-post next time. You can always just edit your message/post.