hello all --------- In: http://www.boost.org/doc/libs/1_37_0/doc/html/string_algo/usage.html#id36769... there is an example: Find Iterator = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = string str1("abc-*-ABC-*-aBc"); // Find all 'abc' substrings (ignoring the case) // Create a find_iterator typedef find_iterator<string::iterator> string_find_iterator; for(string_find_iterator It= make_find_iterator(str1, first_finder("abc", is_iequal())); It!=string_find_iterator(); ++It) { cout << copy_range<std::string>(*It) << endl; } // Output will be: // abc // ABC // aBC = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = how do i find the position of each "abc" in: str1 ? thank's meir