Windows 7 on laptop or desktop with SSD?

Hi. I have a SSD I want to install in my laptop that is a Sandisk 120GB. I want te really fast boots of the desktop but want it in the laptop because the laptop HDD's are SLOW. Should I intall a slow 320GB HDD in the laptop and the SSD in the desktop with windows 7? If I use windows loader on the desktop wil it work without any problems? ' I don't have enough money to get a real copy right now'