Money to text out of state?

I have at&t. Can you text other countries for free from the united states if you have unlimited text?

Do you have to pay if you text on yahoo? Using the yahoo SMS text?

can you read text messages from the computer?

I have unlimited texting on an att phone and does it cost extra to text around the US and not just in your state?

How can I get free texts and/or minutes for vodafone, because I like to text and call but not enough to get a contract otherw...

How do I get my messages

What are some at&t phones with chat style texting? besides the palm. Thanks: ))

Is there a way to retrieve deleted text messages from a verizon cell phone

how can I text for free on my phone if I have free internet on it '

the title says it all.. but how much on one phone for unlimited text each month or whatever. for at&t.