I am planning on buying a new laptop soon. My big limitation is price. I might have to go for the low range and noticed lots of low range laptops with only 32 bit Windows 7 Home Premium. I own a copy of the full edition retail Windows 7 Ultimate with both 32 and 64 bit disks. Being that the OEM installed Windows 7 has a valid Windows license key, could I use my 64 bit copy of my ultimate to install 64 bit Windows 7 on the laptop. I have read that Windows 7 is limited in function not by the disk that comes in the package but the license key. Using that information, it means that Windows will automatically limit me to Home Premium with the OEM key but I will have 64 bit. So, has anyone tried this? Or does anyone have a good answer to this. Thanks!