Running assembly project on 64bit windows

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ASM

Hi,
I'm completely new to assembly and I'm using emu8086 to create my projects, I compiled my project to exe but when i tried to run it there was a message telling it cannot run under 64 bit windows.
How can I make a project run under 64 bit? Am I have to change my codes or assembly that I'm using?

this is the code I used:

; multi-segment executable file template.

data segment
    ; add your data here!
    pkey db "press any key...$"
ends

stack segment
    dw   128  dup(0)
ends

code segment
start:
; set segment registers:
    mov ax, data
    mov ds, ax
    mov es, ax

    mov ah, 0eh
    mov al,'M'
    int 10h

    lea dx, pkey
    mov ah, 9
    int 21h        ; output string at ds:dx

    ; wait for any key....
    mov ah, 1
    int 21h

    mov ax, 4c00h ; exit to operating system.
    int 21h
ends

end start ; set entry point and stop the assembler.

Thanks