I have an OEM Windows 7 Home Premium cd key and a Windows 7 Ultimate Retail Install disk. What procedure would I have to do to install home premium with my cd key? Do I need to edit ei.cfg?
You will need to either edit the
http://windows7center.com/news/how-to-install-any-version-or-sku-of-windows-7/ gives a more detailed step-by-step process of doing so: