I am still using Windows XP Pro SP3 on all three of my Home PC's. However, I am considering getting Windows 7 Home Premium shortly after the official release of SP1. I am concerned about major hardware upgrades with Windows 7 Home Premium in the future. Questions: 1. What are your feelings on Windows Home Premium OEM System Builder versus Windows 7 Home Premium Full? 2. Is the Full version worth the extra ~$50. 3. It looks like the Full version has both 32 bit and 64 bit. Would it be possible to install the 32 bit version, make an image, install the 64 bit version, make and image, and if I desire switch back and forth (through image restores) between the 32 bit and 64 bit versions on the same hardware? Thanks in Advance.