Visual Studio 2003 and Intellisense

Hi all
I am using Visual Studio 2003, and coding in plain C. Upgrading to another version of Visual Studio, or changing the programming language is not an option for the moment. Sorry if this has come up before, but I could not find a definitive solution to my problem.

I have written a DLL and now in another project I want to enable intellisense for my DLL functions. Adding the directory of my header file to Additional Include Directories under project properties, or adding it to the directories under Tools\Options\VC++ Directories (and exiting VS, deleting ther ncb file, recompiling my files) did not help. What am I missing? Thanks for your patience for reading this.

I'm not so sure that intellisense works for C projects in 2003. Have you got this to work in other C 2003 projects?

Intellisense woks for Win32 API, CRT functions, and my own functions within the project. I cannot get it work for functions I export from a DLL of mine. I can write wrapper functions for my DLL functions, but this is the last resort. Any ideas why intellisense should not work for my header file I imported from a DLL?

Come on guys, is this so difficult? Or easy? I'm ready to take the blow, if I do something extremely unintelligent or the answer is easy to the point of silliness, please feel free to say it in your own words. Thanks