DonkeyZ, with only 128MB of main memory you don\'t have enough. This game takes at least 300MB, and even if the whole of it doesn\'t need to be in the physical memory, you also have the operating system which is occupying a large part of it.
Try to upgrade, or to add physical memory. You can also extend your virtual memory, but in your case don\'t expect the program to run smoothly, as it will swap to the disk very often...