CCCP

本战网下的1.5G左右的免CD程序,以前这电脑打过这游戏,现在重装提示:
diablo 11 was unable to locate your cd-rom drive.
please sure your diablo 11 expansion disc your cd-rom drive,then click on "retry."

我不懂英文,求助什么意思,如何解决.
我的是没有光驱的笔记本电脑.