Treo 680 Network setting with Fido

[wuju]

A question for anyone who uses Fido (a Canadian GSM carrier) or have knowledge of the network setting, what setting should I have for regular phone cell network data plan to get email, surf the web etc.

Connection drop down has GPRS, ISDN, Wireless Dial-up (which to choose)

do i need to get a user name and password setup to gain access? I though that if i start using the phone to get/reply to email, etc. I will automatically be charge on my phone account base on cent/kB.