1. Installation

In a command prompt running as administrator, navigate to the folder that 
contains bpgthumbnailer.dll (choose x86 or x64 folder) and enter the 
command:

   Regsvr32.exe bpgthumbnailer.dll

The thumbnail handler is registered successfully if you see a message box 
saying:

   "DllRegisterServer in bpgthumbnailer.dll succeeded."

2. Removal

In a command prompt running as administrator, navigate to the folder that 
contains bpgthumbnailer.dll (choose x86 or x64 folder) and enter the 
command:

   Regsvr32.exe /u bpgthumbnailer.dll

The thumbnail handler is unregistered successfully if you see a message box 
saying:

   "DllUnregisterServer in bpgthumbnailer.dll succeeded."
