How can I write a system fucion in MFC/SDK?

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VC6

C++

Hello,
I have written a console application code as follow:

#include<windows.h>
#include<stdio.h>
{
    system("route -p add 0.0.0.0 mask 0.0.0.0 192.168.15.23");
}

When I turn it into MFC/SDK,the application still appears the black console window. But that is not what I want because the Black Window is not beautiful. I want to hide it or write other function having the same funcion to repalce

system("route -p add 0.0.0.0 mask 0.0.0.0 192.168.15.23");

Could someone tell me How to do it ? Show me your code.
Thank you in advance.