Configure XAMPP Apache and IIS to Run Together on Windows XP or Windows Vista

The task is now simplified by 2 steps below

1. Change Apache port

Open C:\xampp\apache\conf\httpd.conf
Replace “Listen 80″ with “Listen 81″
Replace “ServerName localhost:80″ with “ServerName localhost:81″

2. Change SSL port

Open C:\xampp\apache\conf\extra\httpd-ssl.conf
Replace “Listen 443″ with “Listen 4430″
Replace “VirtualHost _default_:443” with “VirtualHost _default_:4430”
Replace “ServerName localhost:443″ with “ServerName localhost:4430″

That's all. Easy isn't it?