I havent written it but i have been working with and using a script which uses an RS232 TCP/IP interface box which is even cheaper than the GC-100 (but doesn't have IR), But it will support multiple prontos simultanouesly i believe... Had it running at an exhibition and it was Rock solid even after the web scripts died and stopped working.....IT ran perfectly and its the fastest script i have seen.....(no PC required and half the price of an RFX9600)