Hey Khizer, watch this video , i hope it will solve your problem,if you have not technical problem…
https://www.youtube.com/watch?v=BtvDJbaOYjM

visit this link to know detail about hyper terminal with serial communication, https://techawarey.wordpress.com/2013/06/20/serial-port-communication-in-windows-7-using-hyper-terminal-and-putty/

Hii Khizer
it is so simple Using the SimpleMessageSystem you can interface the Arduino to a HyperTerminal session.

Open HyperTerminal

Create a connection called “arduino”.

Select the proper port (the Arduino is set to COM4 on my machine). Don’t change the rest of the fields, they don’t matter.

Configure the port: Set the baud rate to 9600, the bits to 8, parity to none, stop bits to 1, and flow control to none.

You are done. If your Arduino is programmed with the example code distributed with the SimpleMessageSystem library you can type these messages (be warned that while you are typing, nothing will appear on the screen, that is normal. Only stuff that the Arduino sends back will be printed on screen):

w d 13 1

r a

r d

Do not forget the spaces and always finish a message by hitting return on your keyboard (that actually sends the carriage return character). The first message will turn on an LED connected to port 13. The second message will return the value of all the analog inputs. The third message will return the value of all the digital inputs.

HI. Check this page: https://www.arduino.cc/en/Tutorial/ArduinoSoftwareRS232 , I hope that be useful to you!

See ya.

First you need convert RS232 signal into TTL signal which exactly know the micro-controller so It needs MAX3323 or MAX3232 ,so you can build you own or buy from online store ,

And see these page too, https://www.arduino.cc/en/Tutorial/ArduinoSoftwareRS232 and https://daverobertson63.wordpress.com/2013/06/02/serial-port-mini-rs232-to-ttl-converter-adaptor-module-board-max3232-with-arduino/

Thanks all of you :)