2 new issues.....

My first current problem is exporting a Gmax aircraft to FS. I have followed all of the steps and copied the correct files but the program tells me that it can't find makemdl.dll. I'm not sure what to do next.
The second is airfile information. None of the books that I own carry info sufficiently detailed to create an airfile. Does anyone have any links to sites that provide this info.
Thanks in advance.
Will
The second is airfile information. None of the books that I own carry info sufficiently detailed to create an airfile. Does anyone have any links to sites that provide this info.
Thanks in advance.
Will