Samsung SCHI830 Phone Manual page 201

Accounts
Set up accounts for each method that you want to use for
sending messages. Accounts are necessary for sending text
and email messages, whether using your ISP or ActiveSync.
1.
Tap the Start menu bar, and then tap Messaging.
2.
Tap Menu > Tools > New Account at the bottom of the
screen. The first of five setup screens appear in the
display with the options listed below:
Section 3A: Sprint PCS Service Features: The Basics 193