I personally don't know why you need the file on two different computers, but anyways;
You Could
- Copy the file onto a USB Memory stick, and then move it to the second computer.
- Start a Lan game and make the other computer join. Save on the second computer.
- Place it into a shared folder for your network.
- E-mail it to yourself, and Download it onto your second computer.
No need for laziness. If you're so lazy as to not want to do any of those, then why do you want to put it onto a second computer?
I would say the 2nd and 3rd options are the best.
But about the laziness. If you're too lazy to move a file, you're probably too lazy to build.
I think he just doesn't know how to do any of this.