There is a Few step to set up the Blackberry device :
1. Send SMS, type: BB(space)REG send to 333
2. After you get notification, send SMS type: BB(space)ON send to 333
3. Soon you will see an icon for Blackberry coonection
4. For setting the email, you can visit: http://telkomsel.blackberry.com
5. Create new account
6. Put your PIN and IMEI for your gadget.
7. Simply create your email account, etc: Gmail, Blackberry, Yahoo, Outlook, Exchange.
8. Restart you Blackberry
9 . Try send email
10. Try to reply email.

Good luck