The best write-up on the LAA stuff, I think, is CapnScurvy's [
http://www.subsim.com/radioroom/show...635]Windows10; Large Address Aware; SH4 Install[/url]. It's Windows 10, and he goes into more than you probably need, but it is thorough. The LAA app is meant for 64-bit OSes, Vista through Windows 10 with 4 or more gig of RAM. There is no use for it on a 32-bit machine.