Thank everyone. I have solved the problem.

Actually when U install apache using phpdev package it will block another user to view ur site for security reason. What u do just to change some setting.

1. Go to c:/phpdev/Apache/conf/
2. Select the httpd.conf file and open using word pad
3. You need to change "Allow from 127.0.0.1" to "Allow from all"
4. Restart ur apache

Hope can help those who exp the same prob