@Jon
Thanks for the link, i got the ISP cable schematics there. I think it is for CPLD dont know if its ok for 89s51. I have not yet made it. I will try. doubt-Is the Error detection module mandatory?

@Richard
"If you just blindly take someone else's circuit and attempt"
>>did not blindly take it up. we made own code also. as it dint work i tried other circuits.

"The use of a solderless breadboard is often a fatal mistake."
>> Im learning soldering. I used bread board to check if the set up works.
"It may work on one day, after much effort, and not at all the next." "They really aren't suitable for electronics operating at much higher frequency than about speech-level audio."
>>Yes, i agree but the clock period i used was 2s! If i see it working i will definetly make a PCB.
Do you have some pratical frequency upperlimit for bread boards?
I neatly fixed the micro onto the breadboard and fixed a 4Mhz(
with the two capacitors) crystal across pin 18 and 19 on the breadboard itself. Is this really ok?