It's ok. Only trouble I had was with the clients installing the agent.
I've never done this before, is it difficult to set up? I'm doing it as an experiment, if it works (and impresses my network manager) it'll probably end up implemented in a number of other primary schools.
Take a look at the screenshots.
Also, how much does it record? Does it do serial numbers, windows license keys etc? What other useful info does it record other then what hardware is in the machine and the software applications installed? What kind of useful graphs does it display in the web interface?