Not able to run drush in windows

I have installed Drush-5.4-2012-06-04-Installer-v1.0.18.msi in the location C:\ProgramData\Drush by default. I run the program and moved to drupal working directory.

When I type drush it is showing "drush is not recognized as an internal or external command " error. Do I need to configure anything before run? Please help.

You need to set the path variable :

• right click on computer
• go to properties
• click advanced system settings then
• click on environment variable, then
• find the variable path
• and edit it

add this to end of the variable value C:ProgramData\Propeople\Drush and restart the drush, It should work.