Just curious as to the apps that you can load to the Blackberry (GMail Mobile, Google Maps, Live Search, JiveTalk, Ramble) could go on the net without a Blackberry plan and with just a regular internet data plan, like Opera can.

Also, if those apps are configured for regular net usage, when I log onto those apps using my unlimited BIS plan, would I be access additional web surfing charges on top of my BIS? According to Cingular, if I put my sim with BIS onto a non-Blackberry and try to access the net that way, I'd get charged extra unless I want to add an unlimited net on top of unlimited Blackberry.

Thanks in advance.

I'm pretty sure your BIS enabled sim won't access any data in a regular cell phone. The BB data plan goes through RIM to access the data. Your regular cell phone can't access RIM's system.