SMS to email and sent back - using SMSStudio- as gateway

I want a very simple program that will allow and sms received in my gateway sms studio by codesegment) and send it to an email account from this email account they could REPLY the email and the answer will be sent back to the SMS user which sent the SMS this is USER A send SMS A; then this SMS is delivered as an email to account xxxxx and from there, doing a REPLY the email with some text in the email body, will be sent back to USER A SMS studio is very simple and interfaces external programs using Text file or ODBC budget is US$150