when you click properties of desktop and then go to 'settings' tab, click the second monitor and look if "use this device as the primary monitor" checkbox is checked.. and if its not, check it then=) (whoa so many checks)
if it doesnt help you can always use dosbox, then it will for sure use the same monitor as your 'desktop' uses.
http://dosbox.sourceforge.net/download.php?main=1
btw, how do you know its showed on lcd monitor since it doesnt work? o_O