Help in Bad Allocation

When I play the map that exceeds 128x80 (32x20, HUGE), the fatal error occurs always loading the game(also runtime error in C++). Do I need to do some tricks on the coding of those messy C++ CvGameCore?!?!?
Thanks for your help!!!

Is it a "memory allocation" error?

All of the big maps will dump at some point unless the user is using 64bit windows, or the \3GB boot.ini switch is used. I suppose if the map were of a certain size it would just die immediately without the large memory support.

YES!!!

"\3GB boot.ini switch"??

Google it. For example:

http://www.microsoft.com/whdc/system/platform/server/PAE/PAEmem.mspx