I am not in any way Windows-savvy, but I recently found out that our company purchases a Win10 license and may then install 7 if they choose, using the same registration. Whether this is normal or an arrrangement I do not know, we are a VERY large company. Just offering food for thought.. --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .