c_include_path and Arduino compile

In Windows, when compiling Ardiuno code, it presents error messages that refer to other libraries listed in my environment variables. There are some other libraries from mingw used by some other tools/code that I use. I can't seem to copy the error messages, but here are the suspected system variables:

LIBRARY_PATH  = C:\HEN_HOUSE\gnu\lib;C:\HEN_HOUSE\gnu\lib\gcc\mingw32\3.4.2;
C_INCLUDE_PATH = C:\HEN_HOUSE\gnu\include;C:\HEN_HOUSE\gnu\lib\gcc\mingw32\3.4.2\include;C:\HEN_HOUSE\gnu\include\sys;

How would I get the IDE/AVR compiler to ignore these libraries?

Thank you!