[rules-users] Defining the Object Model in Drools IDE 4.0.3...HOWTO????

Hi everybody, I am starting to define my little Drools Project. I am using DROOLS IDE 4.0.3 for Eclipse 3.2 . I already have some underlying Java classes and want to build my rules over those classes. In other words I need to define the Object Model to execute the rules against it. I added all the Object Model classes in the same Rule workspace, but once I started te "Guided Rule Editor" to define the rules, I did not see any "fact" coming out from the "Fact" list. So what should I do in order to get a "Nice and Cool" ( :D ) list with all the classes I put within the Eclipse Workspace. Thank You everybody. I hope u can help me to work it out. Massi