mixed language problem

mixed language problem
I'm trying to link a simple C *.obj file
I developed using C with a LaHey fortran program I wrote. However, I get some link errors stating that the linker can't find the Windows API functions called from the C module.
eg - Error Link 3230:
Undefined symbol
" _CreateFile@A28" in module "xxxxx"
@location 0048AF5A

The C program compiles,links and runs fine by itself made as either a Windows application or a console application.
Apparently I need another library referenced in the link statement, but I don't know which one.
Can anyone help me with this?

You need the library file which contains the function CreateFile. This library must be linked in. (if that's correct English)

Thank you. Do you know which one that is?