The easiest and cheapest way to do this with a lot more functionality is Apple Remote Desktop
. It gets all of the information from System Profiler as well as allowing remote graphical access (I know you can also easily do remote desktop through VNC - I do it at home to manage my daughters Macs) and remote installation of software, updates, etc.
For a UK price of GBP349 (don't have that funny shape in Australia
) that allows unlimited client management it is very cheap.