Assembly Graphic programming Problem

hi.....

Could someone help me out with the assembly code below cause when I execute
the code under vitural DOS command prompt (command .exe) in Windows 2000 Pro
the screen gone blank and display nothing..................

Assembly Code:

title draw2 test

sseg segment para stack 'stack'

db 256 dup(?)

sseg ends

dseg segment

dseg ends

cseg segment

main proc far

assume ss:sseg, ds:dseg, cs:cseg

mov ax, dseg

mov ds, ax

mov ax, 0600h

mov bh, 07h

mov cx, 0000

mov dx, 184fh

int 10h

mov ah, 00h

mov al, 06h

int 10h

mov cx, 100

mov dx, 50

again: mov ah, 0ch

mov al, 01h

int 10h

inc cx

cmp cx, 200

jne again

mov ah, 4ch

int 21h

main endp

cseg ends

end main

Thanks