Derive password

Hi
can any one tell me how protect my derive.
The detail of question is that i have c,d,e and f derive.
when any body want to open f derive for example.
then it ask for password when user put the password
it open otherwise not.
Plz give me some link or clue or code. I am junior programmer
in MFC.
thanks

Are you talking about over a network or just somebody sitting at your computer? Windows handles network security and if it's just your computer, why not just password protect it?

Thnaks.
I want only window protection. for example in my Laptop.
because there is some important data. i do't want to share
anybody.

So why not just password protect your computer if you just want casual protection? If you really want security, you'd need to encrypt the data, as it would be pretty easy to bypass any kind of password if somebody really wanted to. Using Winzip and a password on your files would slow somebody down too.

I'm not really seeing a visual C++ question here though.

Sorry
there is a little bit confusion
i want only protect my specific drive contains a lot of folder and files.
if anybody want to open my laptop it work but if anybody want to
open a sepecfic drive(for ex F:\) then it ask for password.
thanks

I'll reiterate what GCDEF says. What's the C++ question?