Eric Woodruff's Sandcastle Help File Builder 1.6.x.x (SHFB) is needed for FreeImage .NET wrapper
help file creation. It can be downloaded from http://www.codeplex.com/SHFB

Microsoft's Sandcaste is also needed for SHFB to run correctly. It can be downloaded from
http://www.microsoft.com/downloads/details.aspx?FamilyId=E82EA71D-DA89-42EE-A715-696E3A4873B2&displaylang=en
