MMS (picture, sound and video messaging) is currently (March 2008) unsupported on the iPhone, although the capability is there and could (in theory) be introduced in a later software upgrade.
basically picture messaging
no
No, picture messaging is where you send someone a picture and a little note with it, but texting is where you just send a message.
Why can't I receive picture messaging on my H2O phone
It does not cover it. You can get an unlimited plan for picture/video messaging for an additional $15. So that means you will be paying $25 for unlimited for all messaging. If you only have unlimited picture messaging it will cost 25 cents for every picture message you send and recieve.
Picture messaging is available on every model of the iPhone, including the 3G. However, this feature is only available if your iPhone software is running on version 3.0 or later. You can check your software version by going to Settings > General > About...and then scrolling down to "Version". If this says you have a version older than 3.0 (such as 2.x), then you need to update. All you have to do is plug your iPhone into your computer and start iTunes. Once iTunes recognizes your phone, click your phone's name on the side bar and you should see a message informing you that a newer version of software is available. Allow iTunes to perform the update and, after your iPhone reboots, picture messaging will be available.
Yes, you can message people and with an ipod you can
it is like a chatroom message
Yes you can if you have texting and picture messaging then you can send it with no problem you don't know how contact you phone company about it. To send a picture message if you do have picture messaging is instead of sending it to a number put your email in place of it
Text Messaging,call,play games etc..
In order to do SMS messaging, you will need to first own a phone that is capable of doing it. The iPhone is capable, as is other phones such as the BlackBerry.
I think you can only have a signature on the email.