I enabled this by using4\3gb after /fastdetect in the boot.ini
This works fine.
With one model I am finding that SW will terminate when virtual memory reaches about 2.6GB. I have 2GB installed and my pagefile is 2GB giving total virtual memory of 4 gb. When SW reaches about 2GB of physical ram then physical memory usage starts to go down while virtual memory usage continues to go up. Setting pagefile to 4GB delays this a bit.
The other interesting thing is what is causing this memory usage. I have a simple part with four features. I am making jpegs using Joe Jones animation techniques by running a macro and writing a jpeg each time I change something in my model. When I run the macro just to the screen (by commenting the SaveAs4 call there is no great drain on memory. But with the SaveAs4 call enabled SW steadily eats up memory till it terminates. Has anybody else seen this?