How to put the password in my computer ddriver

Encrypting the drive will work but you better be sure you don't forget the password and make a backup key if you do forget the password. Otherwise whatever data you have in the drive is gone if you can't enter the right password.

Read this http://helpdeskgeek.com/windows-vista-tips/how-to-encrypt-your-vista-hard-drive-using-bitlocker/