Once you have it, you'll need to double-click the file to start the installation wizard, then choose Create a new BoxCryptor folder. The next screen will ask you to choose a location for the encrypted folder. The destination can be an offline local folder, but the big draw for BoxCryptor is that it works with any cloud storage service that creates a local directory on your PC, such as the desktop clients for , , or . Most cloud storage services create a local directory in C:/Users/*UserName by default. After you choose the destination folder, enter a name for the BoxCryptor folder that you're creating.

Next, you'll need to choose a drive letter designation for the virtual disk. Be sure to pick one that isn't already being used. (I chose S: for SkyDrive.) Finally, create a password, and you're good to go. I strongly recommended creating a backup of your BoxCryptor configuration file when prompted, since you'll lose the ability to descramble your data if you accidentally delete the config file and don't have a spare handy.

Reboot your PC after closing the wizard to complete the installation process. The virtual drive will appear alongside your physical drives when the computer restarts.

Here's the tricky part: You can't just drag files into the BoxCryptor.bc folder that the software creates in your cloud storage directory. If you do that, the files won't be encrypted. Instead, you'll need to deposit your files directly into BoxCryptor's virtual drive--S: in my case. Doing so will also make them appear in your cloud storage folder in encrypted form.