@Override
        public void run() {
            try {
                int c;
                while ((c = is.read()) != -1)
                    sw.write(c);
            }
            catch (IOException e) { 
        }
        }
@param location path in the registry
@param key registry key
@return registry value or null if not found
installer/src/com/ray3k/skincomposer/installer/WindowsRegistry.java