Hi, I successfully use replace_all function in a win32 "helloboost" application. My code has to work on Windows CE and when I tried a "helloboostpda" application, I had an error on boost/algorithm/string/compare.hpp because of the following include : #include <locale> This seems to be due to PocketPC2003 SDK that does not have a "locale" include (only a locale.h). Is there something I can do to use Boost algorithm/string library on Windows CE ? Thanks Francoise