When you install the Windows 7 beta version, you can see some changes in the start menu when compared to Windows Vista. Similar to Vista, the Run command is not available by default in Windows 7. Many people who are still using Windows XP might want to see the run command in the start menu. Run can be enabled in Windows 7 as well like Vista.
1. Right click on any open area in the start menu and select Properties.
2. Select the Start Menu tab in the properties window and click Customize button.
3. In the customize window, check the box against Run Command and click OK.
Now if you open the Start Menu, you can see the Run Command added to it.