I have found a work around for this issue.
Services such as ipipi.com it will convert the text messages sent to your phone number to emails and since the Boostberry can access the Internet you would be able to check the e-mail and read text message. The service supposedly works the other way around, so by sending and e-mail it would convert the email to text. The service also support MMS, but they charge 10c per message.
I have not tried the service therefore can't guarantee that it works. my need of text messages is not that big.
Let me know if you guys find any other work around.