U3Helper (c)2006-2007 by Markus Birth Some words for the manifest.u3i: If your app doesn't store anything inside %USERPROFILE% or such, then just call it directly inside the - such as: -prefs "%U3_APP_DATA_PATH%\WebMon.ini" -pages "%U3_APP_DATA_PATH%\pages\WebPages.dat" BUT: If you app DOES store some stuff inside %USERPROFILE% (mostly noticeable if there appears something under C:\Documents and Settings\\Application Data\\), call it as follows: appstart This way, the environment variables %USERPROFILE% and a bunch of other related will be set to point to the data directory on the U3-stick and therefore those app will store its data there instead of on the host system. Take a look at the U3Helperex.ini as there are all supported settings mentioned. You'll get the idea of the expected format. U3Helper Forum: http://vanilla.birth-online.de/3/ U3Helper English info: http://www.autohotkey.com/forum/topic11839.html U3Helper German info: http://blog.birth-online.de/archives/164-Programme-U3-faehig-machen.html U3Helper Bugtracker: http://mantis.birth-online.de/set_project.php?project_id=5