For encryption this program is free and it's awesome.
TrueCrypt - Free Open-Source On-The-Fly Disk Encryption Software for Windows Vista/XP, Mac OS X and Linux
Works on Windows, Mac, and Linux and will share an encrypted file or folder across all 3. I use it daily, its kick ass.
I boot Linux off a flashdrive, welcome to 2005 ;)
I have a 4gig on my keychain with my encrypted password file and other software I use to fix stuff.
