First of all I would like to say a big HELLO! to all of you.

I was out of this forum for some months and I really like the fact that this topic is of so great interest , while I am back.

SO back to PICs again..

Airrr:
I would advice you to read all the related topics about sending sms with Gsm ,
so to take an idea of how this works.
But to make you start:
A simple way to test if your phone is working ok (making sure you have checked the connections) you can connect it to your PC serial port and try sending AT commands using a terminal program like HyperTerminal for example
(set speed 9600,8,n,1)
OF COURSE YOU HAVE TO USE A RS232 LEVEL CONVERTER as your serial port
works with rs232 level volt (+-12v) and your Nokia ecpects TTL level volt (+-5v).

Second, as reading your code I noticed that you are trying to use NOKIA 6210 in 'text mode' and I am not sure that 6210 supports text mode.
I think it only supports PDU mode but I am not 100% sure.
You have to encode your text sms in PDU format in order to 'feed' it to your phone trough AT commands which is a complex procedure with pic but IT IS possible -please read through the topic to get an idea.

I hope I have helped you a little

AGAIN A BIG HELLO TO ALL OF YOU!