Budget Dialup has a setup information on their web site for Treo:

http://www.budgetdialup.com/treo.htm

also I found these helpful from Treo web site:

http://support.handspring.com/esuppo...Type=Spotlight

The good thing about BudgetDialup is that you can buy 20 hours for $6.95 and use them over 1 year. No need to pay monthly ISP service.