Arduino with GSM SIM 900 Module

I have Arduino Duemilanove connected to a SIM900 module. I want to send data to my website greenhouse.net46.net which is just for simple html page right now. As far as I understood I'll have to use the following codes
AT+CGATT=1
AT+CSTT=[APN]
AT+CIICR
AT+CIFSR
AT+CIPSPRT=0
AT+CIPSTART="tcp","api.xively.com","8081\
AT+CIPSEND (followed by '\r' and message)
AT+CIPCLOSE

To create a TCP connection with my server. I just want to know that how can I detect incoming data on the server. I mean can JSON detect any incoming data or is there any other alternative like XML or something to display this data on my webpage.
I am new to this and also webpage programming and connections.

Thanks for your patience and I hope I was able to convey my doubt. Thanks in advance.

Friend, I am doing something similar, but when you start sending me some codes it reports error:

AT+CSTT="bam.entelpcs.cl"

OK
AT+CIICR

OK
AT+CIFSR

10.177.68.41
AT+CIPSPRT=0

OK
AT+CIPSTART="tcp","api.xively.com","8081\

ERROR
AT+CIPSTART="tcp","api.xively.com","8081\

ERROR

appreciate your help