Detection Rules Altiris 7.5 Software package examples

I seem to be running into various scenarios where I need to manually add Detection rules with the built in editor in Altiris 7.5. We used both x64 and x86 machines so using an OR operator for example doesn't seem to always work especially when using program files (x86) or program files directories in the same detection rule for the same software package. Is there a guide with some examples? I've searched and found some info but nothing digs deep into this area. They mostly just mention how to get to it and high level functionality.