I would like to use a ps/2 keyboard to send text messages to a cell phone. I have succeeded in connecting a ps/2 keyboard and a display to the arduino so i can see what I am typing. I would like to use a gprs module and have it send what i type when i hit enter on the keyboard.
So, go ahead.
Or, is there a question hidden in there?
May I suggest that you'll need a GSM module, such as the GSM Playground, made by the Hardware Kitchen:
http://www.hwkitchen.com/products/gsm-playground/
It's a complete GSM mobile phone module on a shield. Note that you'll need the accompanying lithium-ion battery pack, too, because the module draws nearly 2A for brief periods when the GSM radio is active.
Not sure whether you mean GPRS or GSM/SMS for this application.
the question is how do I get the gprs /gsm module to send the keys typed when I press the enter?
Don't you think that just might depend on WHICH gprs/gsm module you end up getting?