You will need to download the source and compile it instead of using the Win32 binaries. You can edit the features.h file directly in the source before compiling. Just search for the file, and then search the file for that line to uncomment and remove the // before it.
As for compiling, I think there is a program around here somewhere that should make setting up the compiler on Windows a bit easier, but I don't know where the post with the file is. Otherwise, you could just try following this guide, but it isn't the easiest thing to setup this way and you will probably have issues:
http://www.eqemulator.net/wiki/wikka...a=DevVSExpress