Tinkering with Keyboard?

Hai Folks, I am having a trouble with the following C++ Program. Could need a HELP. Error occur during compilation saying.... Cannot convert void interrupt in line 12 #include<stdlib.h> #include<conio.h> #include<dos.h> void interrupt our(); void interrupt(*prev)(); char far *kb=(char far *)0x417; unsigned char color=64; void main() { prev=getvect(9); setvect(9,our); keep(0,1000); getch(); } void interrupt our() { (*prev)(); *kb=*kb/64; }