serial communication

hi there i am trying to communicate microcontroler with computer.the program is as follow's

#include<reg52.h>

void main(void)
     {
         TMOD = 0x20;
         TH1  = 0xF3;
         SCON = 0x50;
         TR1  = 1;
         PCON = 0x80;
         while(1)
               {
                   SBUF ='A';
                   while(TI == 0);
                   TI = 0;
                   }
         }

at hard ware end i am using max 232cpe
controller at89s52
the prog.
is runing properly.as tested in keil
but not working at the hard ware side
i am tested it in hyper terminal
with the following setting

baud rate 9600
parity bit none
stop bit 1
flow controller none

but no output
please help me