College Laptops

I am trying to install Fallout New Vegas and Fallout 3 on a computer that has limited administrator rights. (for a cousin) I have Fallout New Vegas running perfectly on my home computer, but no matter what I do it just doesn't work on his laptop. I think it has something to do with the registry not being editable, but I bypassed that. The application then fails to start. Whatever, I am going to try to run it off a flash drive. Also, installing Fallout 3 as we speak.