Is there an easy way to set the curve so you can use it on an airplane; I'm flying overseas in a few weeks and would love to know how to do this. Also, I've always heard (perhaps an urban rumor) that Blackberry to Blackberry was free? Thanks for any input.

Airplane mode is easy enough - go to "Manage Connections" and select Turn All Connections off. That will turn off the radio.

Nothing in life is free

PIN to PIN messaging (if that is what you mean by BlackBerry to BlackBerry) counts as data; if you have an unlimited data plan, then it is free!

just turn off all the radio (bluetooth, WiFi, mobile network). BlackBerry to BlackBerry messages (PIN/BB Messenger) are free up to the limit of your data plan. And keep in mind if you use international data you will most likely be charged. And actually the 8330 cannot be used overseas for data as it is not GSM capable.

it counts as data on T-Mobile? T-Mobile Blackberry told me it's completely free of any charges with any of their Blackberry plans, including the $10/mo email only plan. double verified it for my girlfriend who just got a Pearl 8120 and the email only option.

that is an unlimited BlackBerry data plan. if you get unlimited email, you get unlimited PIN

When I had Auto On/Off enabled, my BB used to override Turn All Connections Off and start bleeping and syncing at 06:30, causing alarm and paranoia amongst flight attendants (who tend to be BB non-believers) as well as some interesting data charges from countries I'd never planned to visit.

So now my pre-flight checks include disabling Auto On/Off, my BB stays silent, and everyone seems happy.

BB to vibrate is what I do.