Well I guess I learn something new every day. I wanted to mention that this tool is legal if you purchased the Software legally and used the key that came with the software when installing the OS. This key finder will not pull any other corporate key unlike some other software out there. The reason Windows XP Corporate Addition keys can be used more than once is that it was intended for business use only. The business in question will be subjected to an audit every year to make sure that they are in there legal rights to use the software. They use this Software so they don’t have to use separate CD's when installing the OS over multiple computers making it easier and more practical. I use this software at my company when computers come in and we have to do a reinstall we don’t have to call the customer to ask for the key. Glad to hear you added the software to your files, and sorry for the misunderstanding.