re touch screen

Hi guy's wondering if anyone can help with a problem i have fsx and my my touchscreen i use for the fmc.
I have built a b763 cockpit based on the lds and fs9 everything works great no issues.
I also have fsx installed as well, which i would liked to start using i have done all the configs for the mips and all is working great.
Except for the touch screen,i can drag things down to it no problems,in fact if i drag the radio panel down from one of the defalt planes the touch screen works no problems but as soon as i go into the lds config and the fmc is on the touchscreen it does not work i'm useing window mode
Any idea's will be welcomed
cheers mark