Usage:
sendkeys "Window title or part thereof" "key sequence"
Special keys:

{ALTDOWN} 		keybd_event_(#VK_MENU,0,0,0) ; Hold ALT down.
{ALTUP} 		keybd_event_(#VK_MENU,0,#KEYEVENTF_KEYUP,0) ; Release ALT.
{BACKSPACE} 	vk=#VK_BACK
{CONTROLDOWN} 	keybd_event_(#VK_CONTROL,0,0,0) ; Hold CONTROL down.
{CONTROLUP} 	keybd_event_(#VK_CONTROL,0,#KEYEVENTF_KEYUP,0) ; Release CONTROL.
{DELAY} 		vk=0 : Sleep_(1000) ; Delay typing for one second.
{DELETE} 		vk=#VK_DELETE
{DOWN} 			vk=#VK_DOWN
{END} 			vk=#VK_END
{ENTER} 		vk=#VK_RETURN
{ESCAPE}	 	vk=#VK_ESCAPE
{F1} 			vk=#VK_F1
{F2} 			vk=#VK_F2
{F3} 			vk=#VK_F3
{F4} 			vk=#VK_F4
{F5} 			vk=#VK_F5
{F6} 			vk=#VK_F6
{F7} 			vk=#VK_F7
{F8} 			vk=#VK_F8
{F9} 			vk=#VK_F9
{F10} 			vk=#VK_F10
{F11} 			vk=#VK_F11
{F12} 			vk=#VK_F12
{HOME} 			vk=#VK_HOME
{INSERT} 		vk=#VK_INSERT
{LEFT} 			vk=#VK_LEFT
{PAGEDOWN} 		vk=#VK_NEXT
{PAGEUP} 		vk=#VK_PRIOR
{PRINTSCREEN} 	vk=#VK_SNAPSHOT
{RIGHT} 		vk=#VK_RIGHT
{SCROLL} 		vk=#VK_SCROLL
{SPACE} 		vk=#VK_SPACE
{SHIFTDOWN} 	shifted=1 : keybd_event_(#VK_SHIFT,0,0,0) ; Hold SHIFT down.
{SHIFTUP} 		shifted=0 : keybd_event_(#VK_SHIFT,0,#KEYEVENTF_KEYUP,0) ; Release SHIFT.
{TAB} 			vk=#VK_TAB
{UP} 			vk=#VK_UP
{WINDOWS} 		vk=#VK_LWIN