Messages Question!

Hello! I recently downloaded messages for my iMac ( a beta version for lion). I have it connected with my e-mail. I can send text messages from my e-mail to iPhones, and they reply back as a message from my Messages app, not to my e-mail. Is there a way that I can have them sent to my e-mail and to messages? I'm kind of confused on this myself. I hope I was able to make my question understandable. This is my first forum post!

Thanks!

Shelby