This is a port of the ACL Editor project by Keith Brown from the Security Briefs column from March 2005 http://msdn.microsoft.com/en-us/magazine/cc163832.aspx The original implementation uses the outdated old style managed extensions for C++.
The goal of this project is to use current CLI/C++ and VC2010.
The editor is contained in a mixed mode assembly that references the msvcrt libs. Therefore you get separate 32 and 64 bit dlls.