In their wisdom, they have decided to removed the JVM from your web browser in Windows XP.
If you are unable to see the virtual tours you do not have the JVM installed on your Windows XP operating system.
To enable you to view java enabled internet technologies such as virtual tours, you must download the JVM from the Sun Microsystems site at the link below. This is a once off download.
Click here to download JVM. [ http://www.java.sun.com/getjava/download.html ]
If you continue to experience problems seeing the virtual tours please contact firstname.lastname@example.org