change the default location of program installation

You might want to change the location of your system default folder (C:\Program Files) from C drive toanother system drives (D or E drive). By default software setup will attempt to install program in C:\Program Files directory. It is good practice to make the backup of the installed programs, if you installed all your programs in other than C drive. If you have little knowledge about editing windows registry then you can configure your computer for this purpose.
Follow the given steps to configure windows registry:
Now modify the value to any other drive (for example D:\Program Files).
First click on Start button then type Regedit in Run option.
Here locate the location to:
Go to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion
Here in right side panel, double click on ProgramFileDir and here its default value is
C:\Program Files.
Now close the registry editor and restart your computer after any changes to go into effect.