question about compiling in VC

hi,
   I want to compile the psqlodbc-07.03.0200 source files in VC6,but I met a mistake.

   it said it could not find the file 'config.h' when compiling. 
d:\projects\vc\odbc\psqlodbc\gpps.c(22) : fatal error C1083: Cannot open include file: 'config.h': No such file or
directory

   so I changed the "config.h.in" to "config.h" and then it was successful.I wondered whether I was right to change the
file?
 
   

   I have searched the list archives but I cannot find the direct answer.Plz help me.     
   Thanks

               Regards 
　　　　　　　　Feilong Lee
　　　　　　　　li-fl03@mails.tsinghua.edu.cn
　　　　　　　　　　2004-11-17