How can I add the ecos to the Nios II RTOS combo

Hi monkeyboy:

my promble is that when I had successed built a application following the document meanwhile successed build a "advance c/c++ project " and run the "hello.c" following the document , now I want to set a common "c/c++ application" in the evirment of ecos . I found that the Microu/os is listed in the combo of the RTOS on a "c/c++ application " project 's " system peoperties " and the "c/c++ application ' can choose the os evirment by choosing the "none or Micro/os ". So i think the ecos should be listed in the combo but it is ont found .So I think if i want to set a "c/c++ application " in the evirment of ecos , I should built a "Advance c/c++ application" project----named aihuazou, which is based on ecos , then I set a "c/c++ application " below the project "aihuazou" ,only that ,I can success a c/c++ application on ecos, is it right or not.

thanks