SMS 2003 viewing the namespace
So where would you go if you wanted to find out exactly which bits of inventory are interrogated by SMS 2003? I seem to remember playing with WBEMtest and having a look at namespaces and classed viewing which bits of hardware inventory you could collect. It's worthwhile becoming familiar with this tool in case you can't view the Admin console for some reason. (By the way - where did MOF manager go? It was really useful in SMS 2.0 and now I need it - it doesn't exist any more...)
But I also noticed this mail on the SMS mailing lists the other day and saw some other resources you could use...
SMS Schema information views
Schema View mapping
SQL Server views
Well its the nearest you can get to seeing the schema - although we don't publish it..