Plz reply me any options there to make my 9th and 10th pin free from using as external crystal
There is an article here that describes how to do it: Wolf Paulus' Journal
But it's a lot of work to get 2 more pins. If you are not comfortable with fuse settings and changing bootloaders you may want to consider a board with a chip having more IO pins, like one of these:
Sanguino: http://sanguino.cc/
Gator : http://www.ruggedcircuits.com/html/mb324p_nc.html
Teensyduino: Teensyduino - Add-on for Arduino IDE to use Teensy USB development board
The last one is very cool, its tiny, with onboard USB and has 3 full 8 bit ports available.