Shyam,
Your post is ambiguous. What exactly are you wanting? Are you looking for a trade? Do you need help figuring out how to switch the driver with a new one?
Also, please be a bit more patent in waiting for a reply. The "someone" "anyone" posts will only annoy people, not encourage them to help you out.
This is a great place to learn about DIY lasers. There is a wealth of information to be found here if you are willing to look for it.
If you really get stuck and can not find what you need, someone will usually point you in the right direction... but do yourself a favor and be sure to do your homework first.
Good luck and have fun!
TW