We have bought a bunch of HP Thin Clients that come with WES7 installed - but NOT with WES7 SP1 which we want. We also need to cusomise the OS including altering the sysprep unattended file. So ultimately, i want to use the toolkit or image builder wizard (IBW) to create a new image. However, even after pulling the serial key from one of the thin clients, when entering that into the image builder wizard or toolkit, it says that its not valid? Can anyone explain why this is? That would imply that a general license key is issued by MS for creating the images using one of the 2 tools, but that the final image has a DIFFERENT serial key once the OS is installed onto the device - is that correct? 1: Can anyone suggest another way to get a serial key from our purchase/licensed devices, to create a new image? 2: If we were to use a serial key that worked, sourced from the internet, would we be breaking any rules? Could said serial keys be black listed at a later date? Background: We are having issues getting MS to give us serial keys for the OS, even though we have bought the through HP and HP are refusing to give us any keys sayind speak to MS - VERY ANNOYING!!! We pay both these companies 5 or 6 figure sums annually........... Many thanks.