Edit the Apache configuration file (usually httpd.conf, but, it can be elsewhere. For example in Ubuntu Linux, it's /etc/apache2/apache2.conf) as follows:
Add the following to the end of the file (changing the alias and/or path as required):
Alias /ewdApps/ "d:/php/ewdApps/" <Directory "d:/php/ewdApps"> Options Indexes MultiViews AllowOverride None Order allow,deny Allow from all </Directory>
Note: Even on a Windows system, use forward slash characters ( / ) in the physical path references
Save the changes and restart Apache.