I don't use MAX232 for this circuit. I use a 22k resistor at Rx pin and 1k resistor at Tx pin. May I know is there any effect for not using MAX232? There is another question that I would like to know: can MAX3232 be used to replace MAX232?
Yes, I used a 232. From the PIC Hardware Serial to a PC some kind of level inverter is needed. The PICs sends in true mode while PCs use inverted. It is a hardware thing that can not be fixed in soft ware . That is why we have SERIN/2, bit banging a "virtual serial poer".

I think the 3232 will also work but I have not used one to be sure about it.

If the module is always sending a 1,then use that in the WAIT part, grab what you need after that. What are the possibilities for the remaining data? 0-9-A-Z?