How did you do it, Sallyanne. I downloaded but it wont run because Linux complains it's not executable and I can't fix it myself because it's read only in the properties. I may give up because I don't want to signup to yet another forum to get help.
It is a Java application, and runs from your home folder. Not even really necessary to make it executable, except for maybe the starter script for a .desktop file.
Not too sure that Sallyanne uses linux so:
It goes something like this:
Before starting you need the java runtime installed. That should be in your distro repository. In ubuntu look for something like: http://imgur.com/tuT0Evv
Then download and unpack the jwildfire zip into its own folder, somewhere in your home partition (1)
Start it up using the standard java syntax
java -jar j-wildfire-launcher.jar
in a terminal or run the provided bash file (2)
Use the Add Java runtime
button and browse for the location (3) something like shown. It will be there somewhere. Only need to do that once or again if the java packages get updated
all-in-one screenshot: http://imgur.com/YbNt8VH
Then it is click on the start button to get the JWildFire dialog. Sometimes a little delay before it starts, looks like this. http://imgur.com/6EyfVyT