I know of a way you can do this, not sure if its done this way by TGC, but hey. If you have a look at one of the new expansion packs, it includes what are called filemapping commands. What these do is take a part of memory, stores stuff in it, and makes it possible for you to reference it as a file, but because its in RAM, its very quick. It's also non-protected, so two or more apps can access the same part of memory. In this way you share the memory between the 2 apps, and pass information between the 2.
AMD Athlon XP2800+
GeForce FX5200 128MB
1.25GB DDR 333MHz RAM