Hi, it's good that someone follows Nuhi's work. It seems 7Lite is "file based" but I think since Vista is better slimming solution based on assemblies. They have manifest file with information about name, processor architecture, dependencies etc. Btw exists somewhere binding between Windows Features and corresponding files/assemblies? To Ben: I disassembled your application and you really should separate business logic and presentation logic... no offense. Best regard, Michal Pavlik