How does the iphone picture messaging work?

I understand that you have to use email to send pictures with the iphone but lets say that i want to send a picture to my girlfriend who has a blackberry pearl without an interent plan. Will she be able to get the picture and download it just using media net? And would she be able to send me one without having the internet plan? She has the new pearl but does not have the interent plan for it but does have media net capabilities.|||You click on send as email enter it as





10digitphonenumber@mms.att.net





To send Text/SMS messages from your computer to your phone





10digitphonenumber@txt.att.net





if she isnt att here is a list of the rest of these


US Based Carriers:





Alltel = xxxxxxxxxx@message.alltel.com


Amp'd Mobile = xxxxxxxxxx@vtext.com


AT%26amp;T = xxxxxxxxxx@mms.att.net


Boost Mobile = xxxxxxxxxx@myboostmobile.com


Centennial Wireless = xxxxxxxxxx@myblue.com (added by kcirrab-this is accurate for i have centennial)


Cingular (AT%26amp;T) = xxxxxxxxxx@mms.mycingular.com


Einstein PCS = xxxxxxxxxx@einsteinmms.com


Nextel = xxxxxxxxxx@messaging.nextel.com


Sprint = xxxxxxxxxx@messaging.sprintpcs.com or xxxxxxxxxx@pm.sprint.com


T-Mobile = xxxxxxxxxx@tmomail.net


US Cellular = xxxxxxxxxx@mms.uscc.net


Verizon Wireless = xxxxxxxxxx@vzwpix.com


Virgin Mobile = xxxxxxxxxx@vmobl.com|||Hey, Aiden G, that's what I was about to say!