Can shared computers share programs?

I am wanting to get a Money Plus program to my son's computer. His computer and my computer are connect with a wireless network adapter. Is there a way to send the Money program to his computer? I do not have the CD. I bought it via net and downloaded it. I do not have the product key email that they sent me and I have no clue who I bought it from.

Is there any way to get this program to his computer so I do not loose it?

I do not even have a CD burner on my computer. It is on his computer.

No, I don't think you can do that. If the program uses an installer copying it over will not work.