and for the last time people! you CAN'T run original doom in any of the fallowing, windows 2000, windowsME and WindowsXP! why? because they DO NOT have DOS, it is a emulated cheap imatation of DOS so it aint gonna work! if u have these O/S's then u must use a port. Also if u have win98 dont upgrade unless uhave to, many games have problems with those windows versions. as for XP i am not sure yet if it will be worth getting or if it will be like another windows ME