Altiris Reports

I have spent most of the day trying to work out the reports system in Altiris v7.1 just to create a list of computers with a specific amount of installed RAM. I can get the column for RAM to display but cannot work out how to actually get the content to display. I have even tried in the management concole to create a custom filter that actually shows installed RAM but ti doesn't pick up any computers once I enter a value. I can't believe how difficult this has been made and the reports system is like a labirynth!!!