Find your burning program (Nero probably) and copy the folder from Program Files to CD. Then you have the program on CD.
But I don't expect you can install or run it on another PC from there. To do that you need the original install CD. In that case, either buy that CD, or download free cdburnerxp. It might be able to do what you need.
Can you tell me how I can copy Nero software on a CD since I haven't got the original disk? This is Nero 7; I know is old but enough for want I need to do.