As I see your application require DbgHelp.dll
Because it is preinstalled dll on Windows 2000/XP there is no problem with these OS's
Moreover it can be installed on Windows NT using Debugging Tools for Windows from Microsoft site:
http://www.microsoft.com/whdc/ddk/debug ... llx86.mspx
http://msdn.microsoft.com/library/defau ... rsions.asp
However, they cannot be installed on Windows 9x...
So my question is are you planning Windows 9x support for your product or not? 'Cause I still use Win98 at work {sigh}