- From the Desktop, right-click My Computer and click Properties.
- Click Advanced System Settings link in the left column.
- In the System Properties window click the Environment Variables button.
- From the Desktop, right-click My Computer and click Properties.
- In the System Properties window, click on the Advanced tab.
- In the Advanced section, click the Environment Variables button.
- Finally, in the Environment Variables window (as shown below), highlight the Path variable in the Systems Variable section and click the Edit
button. Add or modify the path lines with the paths you wish the
computer to access. Each different directory is separated with a
semicolon as shown below.
C:\Program Files;C:\Winnt;C:\Winnt\System32
key : windows 7 pro,windows 7 software windows 7 home