a dial up logging program

i am about to start to try and write a program
i want to log who makes a dial up connection
i would like it to log the user (i have no idea how to do this)
the time (i was think could do this with the time cmd but how do i stop it saying enter new time? and how do i write that in c?)
and the same for the date.

while typing this i realised i dont no where to start, all i could do is save the log

help

win xp

*bump*

does anyone know how i can print the current logged on user?

Code:

---

#include <windows.h>
#include <stdio.h>


int main()
{
        TCHAR buff[256];
        DWORD size = 256;

        GetUserName(buff,&size);

        printf("User: %s\n",buff);

        return 0;
       
}

---

thank you Sorensen
and thanks to Salem for moving it for me (did not think of win pro. DOH!)

would anyone like to give me the cmd for time and date

UPDATE: I worked out time is GetSystemTime <--- i think
it says this is a long <--- stuck

thx