[kstoff]

The 2GB memory allocation limit for 32bit applications is due 32bit pointers. If a programmer had used 32bit pointers, then it is impossible to overcome the 2GB limit without decompilation of the code. On the program's website there is only said about internal flag, which I believe informs the operational system about program's allocation capabilities and requirements.

If an application wasn't created to benefit from the memory larger than 2GB, then simply changing the flag won't do anything. It's not so simple, I am afraid...