Program Protector

From Blumentals Software:

Program Protector is state of art security utility, which allows you to password protect programs. You can password protect any Windows application. This functionality is achieved using a special algorithm which modifies executable file of the application, so that it requires to enter valid password before program can start. Program Protector is very easy to use and does not require any special computer knowledge. It protects Windows applications with a password, maintains protected program list, drag and drop program files and shortcuts to protect them, integrates help system and usage tips, allows to password protect itself, allows to customize password prompts, and supports protected program activity logging.