The software is packaged into one or more self-extracting files and is available on the Internet at various websites:
http://sourceforge.net/projects/winvnkey
After downloading wvnkeyNN-xxx.exe to your local hard drive, you can double click on it to begin the installation process. Once installation is completed, you can start using it immediately without rebooting your machine.
For Windows 95/98/ME systems you must download the mfc42.zip file if your <WINDOWS>\SYSTEM32 directory does not contain the file MFC42.DLL. After download, unzip it, and place MFC42.DLL into <WINDOWS>\SYSTEM32 directory. This is done once and only once. The next time you download WinVNKey, you can ignore mfc42.zip