ok one problem down 
but now when i am trying to upload program to atmega8 i am getting this error :
avrdude: verification error, first mismatch at byte 0x0000
0x3f != 0x00
avrdude: verification error; content mismatch
ok one problem down but now when i am trying to upload program to atmega8 i am getting this error :
avrdude: verification error, first mismatch at byte 0x0000
0x3f != 0x00
avrdude: verification error; content mismatch