Environment Variables Manager
The Environment Variables Manager is a utility for setting up an operating system's environment. It represents environment variables as files and exposes its functions through the Windows shell facilities. (screenshot)
Download installer:
Help file included
32-bit: evmshell-1.1-x86-setup.exe 622k
64-bit: evmshell-1.1-amd64-setup.exe 644k

Or download files for manual installation:
Manual installation is as simple as registering a DLL with the regsvr32 utility
32-bit: evmshell-1.1-x86.dll.zip 79k
64-bit: evmshell-1.1-amd64.dll.zip 102k
Help file: evmshell.chm 286k

Platform: Windows 2000, Windows XP, Windows Server 2003
License: Freeware
Current Version: 1.1
Release Date: 01-Mar-2008
Free support: support1 (at) evilapp (dot) com