IF youve got UFO Defense CE you can get it working under XP by (and i shouldnt be advertising for another site but its an emergency) downloading 2 files called "musfix.dll" and "xcom1fix.exe" from www.xcomufo.com. It worked a treat for me anyways
:devil: I have just upgraded my system to WinXP Pro and did'nt know that it does'nt support DOS based games. Will somebody shed some light on this for me as Im going into UFO Cold Turkey!! Help