Format HD and reinstall original Windows 7

Hi chaps, I have a Dell XPS17, dual booting with Windows and Ubuntu on it.
I have to give it away and therefore reinstall windows. Usually, I'd format the whole HD and reinstall Windows, but I don't have the Windows CD – it wasn't dispatched with the laptop unfortunately – so I'd like to try to do everything with the Recovery partition. I checked and it appears to be there. Now, can I format the whole HD except the Recovery partition so that I reinstall windows and remove Ubuntu with some Windows' utility rather than manually formatting it?