Nice tool. For laptops with Nividia Optimus Technology though such as mine it only detects the dedicated card (GeoForce GT540M), not the integrated card (Intel HD 3000) which is used for browser based games unless you otherwise specify.
Probably not a huge problem as any laptops with that are fairly recent and can run html5 very well, even with the integrated card, but figured you should know =)
Edit: This is running Windows 7 64bit