In an attempt to understand API hooking, I've been working through API Hooking Revealed.

I've also downloaded the sample code, both the source and the precompiled binaries, but I'm getting an error when I try to run "HookSrv.exe":

the application has failed to start because MFC42D.DLL was not found
Does anyone know what this DLL is and why my computer doesn't have it?

Thanks for any info,
Johnny