I use SMS Backup+ from the Play store. It works well and you can configure it to upload your text messages to your GMail account.
Just use a app called SMS Backup & Restore from the market. It backs them all up in a HTML file on your phone and you can transfer that file to the PC and read them there.
Does anyone know if it is possible to get a record of text messages sent and recieved from your own phone records either online or from sprint?