VS2005 does not INCLUDE file from specified DIR   

Hello All,

For some strange reason, my VS 2005(with Plat Builder for CE 6.0) does not 
include the header files from a directory that I am trying to explicity 
specify. Now, I have to manually go in and replace my header files, with 
relative path names. For example: #include "A.h" would have to changed to 
#include "../../../ALL_INCLDUE/A.h"

Its not feaible for me to do the above because, its a faily huge project. 
1000+ files.
Anyone encoutered the problem? 
Yes, I tried to go to:

1. Project >> Properties  and set additional directories to include 
ALL_INCLUDE. No effect after doing so. Also, I tried -->
2. TOOLS >> OPTIONS >> VC DIRS >> and set the INCLUDE dirs to include 
ALL_INCLUDE. No effect even then.

In both cases, I provided relative paths, as well as absolute paths. Still 
compilation problems. and the only compilation error is that it cannot locate 
those header files in my ALL_INCLUDE dir... Don't know why!

It used to work before. I have built many projects using my VS2005 (on  
other machines, but for some reason, on this particular installation, it 
fails. Other features of VS2005 works great.)

Thanks

date: Mon, 25 Aug 2008 08:04:00 -0700   author:   User_Anony