I put Pcdlib32.dll in C:\Windows\System32, Picaview32.cnt, Picaview32.hlp and Picaview.dll in C:\Software\Graphics\PicaView, and merge the following REG file. You will need to change the serial number / registration info. You might need to adjust the path, as well as the last three lines with your license information. You can get that information from a current, correct installation. Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\*\shellex\ContextMenuHandlers\PicaView32] @="{68f32140-2ca3-11d0-acc1-444553540000}" [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{68f32140-2ca3-11d0-acc1-444553540000}] @="PicaView32 Shell Extension" [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{68f32140-2ca3-11d0-acc1-444553540000}\InProcServer32] @="C:\\Software\\Graphics\\PicaView\\PicaView.dll" "ThreadingModel"="Apartment" [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\PicaViewImage] [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\PicaViewImage\DefaultIcon] @="C:\\Software\\Graphics\\PicaView\\PicaView.dll" [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\PicaViewImage\Shell] [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\PicaViewImage\Shell\Open] [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\PicaViewImage\Shell\Open\Command] @="rundll32.exe C:\\Software\\Graphics\\PicaView\\PicaView.dll,ShowImage %1" [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\SharedDLLs] "C:\\WINDOWS\\system32\\Pcdlib32.dll"=dword:00000001 [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Shell Extensions\Approved] "{68f32140-2ca3-11d0-acc1-444553540000}"="PicaView32" [HKEY_LOCAL_MACHINE\SOFTWARE\ACD Systems\PicaView32] "UsageCount"=hex:00,00,00,00 "Code"="CODE HERE" "Name"="NAME HERE" "Evaluation"="SOME STRANGE ALPHA NUMERIC STRING"