Thanks nihil

Again i followed the same registry writing process.
Now i can appear/disappear folder options.

But i have two administrator account in my PC.
But when i tries to enter into regedit from one administrator account type.
It gives an error like "Registry editing has been disabled by your adminstrator".
But i have not changed any configuration like this from any one of the adminstrator account type.
Your idea really works. I got my solution.
Thanks