Place your local area code and your long distance prefix (usually "1") in the appropriate fields. Use the Dial prefix to disable call waiting (so your modem doesn't hang up when someone tries to call you when you're online!).
To go back, click the OK button.
That's it! If you've reviewed the General, Accounts, and Locations tabs, you've been completely through your FreePPP setup! For more information, please refer to the online documentation that came with FreePPP.