AxCrypt Helper for Axcrypt
Combined with AxCrypt Helper, AxCrypt allows you to store a passphrase protected encryption key on a removable medium such as a USB flash drive. You can remove the encryption key from the system so that if your laptop computer is stolen, the key will not be available. AxCrypt helper automates the use of the passphrase protected key file, effectively providing two-factor (something you have - the USB drive and something you know - the passphrase) access control to your data.
AxCrypt Helper requires Windows XP and the .net Framework. Use Windows Update to get the .net Framework. Like AxCrypt, AxCrypt Helper is free.