Java Web Start is part of Java 6 and so does not need to be installed separately. The very first download of the Web Start version must take place through a browser and although this will usually be correctly configured to launch Web Start when the OT is selected in the ALMA Science Portal, this may not always be the case. Linux users will often find that ``IcedTea'' is the default version of Java and this should be changed. On Firefox, this is done via the Applications tab of the Preferences menu (Figure 2.1).
To verify that Web Start is correctly working, the following link should be followed and one or more of the demos launched: