I replaced the Shell32 in the System32 (with the x32 one) and the SysWOW64 (with the x64) and when I try to open up a window, it says "Sys32 explorer.exe is not a vaild something" (I can't remember). Lucky, I backed up the other Shell32's. Anyreason on why it's doing this? I'm on Windows 7 Home Pre. SP1.