I am using SS 4.3 since November 2007 in Vista Home Premium. Contrary to some posts i red here, i have zero problem with SS 4.3 under Vista. One month ago windows automatically upgrade its system to Vista SP1 and SS show no problem adapting with it. Only one time, it is almost crashed, when i want to move my library to different directory in harddisk. But appear it only need more time to complete the moving process. I think this is the only problem i experenced with this software. I checked in C:\WINDOWS\SYSTEM32\ and there is no TFSWAPI.DLL anywhere. Even Windows cannot locate it in my computer. I checked also in, HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\ which is empty, but i found many *.dll files in, HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\DIINXOptions\ and there is no Salwrap.dll. NOTE : I never use SS 4.3 to transfer to any MD devices though. I only use it to transfer songs to NW-S705F, NW-A800 and create ATRAC CD to play with D-NE20. So technically, i never use any MD modules in SS.