Install PHP-4 and PHP-5 in same computer

PHP
1

I’ve XAMPP server installed on my computer. Can I install both PHP-4 and PHP-5 on this server?
If not then how can I manage it?

2

Well, I think this blog will be helpful to you.
http://devzone.zend.com/537/installing-php-4-and-php-5-concurrently-on-one-winxp-computer-with-a-single-apache-2-installation-both-on-the-same-good-old-port-80/

3

Thank you very much.