LS doesn't use Application Data for anything. You can configure it to use your XP Profile folder though, but you wouldn't want that. Im really not understanding the point of your portable version though. Everything is personal preference. What theme you load, what file manager you want, what task manager you want, etc. There isn't even a reason why you need to use the installer, just get the build and configure your theme to work. You could get the install under 10M easily I bet.