Environment Variables in Windows 7 Are Not Editable

[deskendes]

In the environment variables windows, the editing buttons below system variables are disabled (grayed out), though I need to edit the path variable to set up Django.

Any ideas why this problem occurs and how to fix it?

[Banfa]

It occurs because you do not have admin privileges for the machine you are using.

However you can add a path variable to you user Environment settings, Windows should merge the 2 paths into a single one for you.