Hides your confidential files beneath a jpg file uses 256 Bits strong AES encryption. If you have a strong password, it's impossible to crack the file. The resulting file is fully portable and works across Platforms and even Email clients. AES encryption makes your file virtually invisible to unintended people. This is the only protection you can use to easily transfer from different PCs and even Macs!
You can use it hide all kinds of documents or files, all of them will be fully protected by industry leading encryption algorithm AES (Stands for Advanced Encryption Algorithm. This is the encryption standard made and adopted by the United States government. Wikipedia link for the same can be found at http://en.wikipedia.org/wiki/Advanced_Encryption_Standard . ConcealFiles is a stealth program that doesn't put any restriction of size of the package.
You need to have .NET 3.5 SP1 in order to use this program. Guided Setup will prompt you to dowload and run the package if it's not found on your system.