I\'m not sure if this question has been answered in full or if my title is descriptive enough given my situation, but I\'ve been asked to convert a project from being built
It looks like you are using JRE 1.5 rather than JDK 1.5
Make sure you download the JDK 1.5 and your issue should go away. You can set the default JDK in the preferences, search for 'jre'.
Projects can also define their specific jre
Get JDK 1.5 from Here http://www.oracle.com/technetwork/java/javasebusiness/downloads/java-archive-downloads-javase5-419410.html