How do i do a custom install on my laptop i want to change my operating system my files are on dvd any help?

you can make a custom install disk for windows using

nlite for xp :- http://www.nliteos.com/download.html

vlite for vista :- http://www.vlite.net/download.html



once you complete the wizard just burn the iso with something like imgburn pop it in your cd/dvd drive and install