How to install earlier versions of Windows programs in Windows 7

In Windows 7 most of the programs that run in Windows XP or earlier versions won't work.
Here is the method to run programs in Windows 7.

1. Search for troubleshoot in start menu and click on Troubleshooting from the list (the first one).
2. Under the Programs click on Run programs made for the previous versions of Windows.
3. Click Next button and there will be a list of programs.
4. Select the programs  you want and click Next.
5. Select  the option you want.