Windows Environment Manager is environment variables editor which is free, simple and very easy to use.
Environment variables are specially named string aliases for basic system properties.
Show environment variables as an editable tree.
Automatically checking for invalid paths in variables.
Backup environment variables to the registry file.
Microsoft Windows 95/98/NT/ME/2000/XP operating system.
.NET Framework Version 1.1
Intel Pentium II 350MHz or above.
128 MB RAM or above.