According to the box of DiskLock by Power On Software, DiskLock will allow you to create:

“Easy-to-Use Password Security, File/Folder Locking, and Encryption”

Protect the Privacy and Security of Your Important Data!

Their claim is well met as I was able to quickly and easily create password protected folders and secure files on my notebook from other users.

System Requirements:Color capable Macintosh runningSystem 7.5.3 or higher, includingMac OS 8

The bottom line: If you need a quick, easy way to protect your files, this is the way to go. Five Steve Jobs heads out of 5.