I tried yesterday to help a friend of mine, he is using Windows 7 Ultimate x64 When i replaced the ExplorerFrame.dll and 2 more files ( pnidui.dll and SndVolSSO.dll ) the OS didn't startup at all. I use those 3 files for my OS, but i'm running x86. Can you help me,please ? He liked the way i customized my Windows, but i can't help him with those 3 files. How could i make them compatible with x64 ? Any chance ? Thanks in advance.