Installing a firewall, antivirus tool and spyware detector will keep many external dangers locked out of your PC, but they don't make you entirely secure. Anyone who has access to your system can still browse all your most confidential files, unless you encrypt them with a tool like AxCrypt.
The program is surprisingly straightforward in operation. It doesn't require any configuration, at all. If you want to encrypt a file, just right-click it, choose the new AxCrypt menu and select one of the Encrypt options, enter your passphrase, and that's it. The file will be protected with AES 128-bit encryption, and no-one else is going to view it unless they know the passphrase.
AxCrypt makes it unusually convenient to work with encrypted files. If you want to view an encrypted document, just double-click it as normal, enter your passphrase and it'll be displayed in the associated application. Change the document and it'll automatically be re-encrypted, too, so your data will stay protected with the absolute minimum of hassle.
The program also includes an option to convert your document into a self-extracting file; email it to a friend, and they can use your passphrase to view the contents. A "Shred and Delete" option will securely wipe a confidential file, making it virtually impossible to recover the contents. And support for files larger than 4GB means you can be sure that AxCrypt will be able to protect all your files.