Thanks for the reply.. But now I have successfully programmed the armega8 using a software called extreme burner.. But I still have a small photoresistor problem. I had programmed the chip without connecting the sensors and servos on the 50 $ robot chip. Now, when I connect the photoresistors to the chip, the resistance between the ground and AVCC drops to 2-4 kilo ohms. Without the sensors, the resistance between ground and AVCC is 10-12 kilo ohms. Please tell me how to solve this one... Btw, when I switch the robot on, only one of the servos work and it's kinda slow. Please tell me how to solve this problem..