What you need are: StealthClient, StealthText, StealthRelay and StealthCoins.
All the relevant links to these apps are included in the OP:
https://bitcointalk.org/index.php?topic=836009.msg9342300#msg9342300StealthRelay package also includes instructions on how to set up a pipeline and send XST with a decentralized SMS. You may also need a google voice number, but to my understanding there`s also other way to send XST without internet and google voice number (as in case of that Iranian guy).
There is no minimum XST required to send through StealthText. You can even send 1 XST.
If you manage to set up a StealthText service, PM me your XST address and I`ll send you 100 XST for free for testing purposes.
Thank you very much for info. I`ll try to set up StealthText service on weekend. I bought today lil bit of XST, but thanks anyway.