There's a couple of sweater pattern generators out there where you put in your gauge and the finished measurement you want and it makes you a pattern. You can adapt them to v neck or a cardigan as well as a pullover.
http://www.woolworks.org/patterns/raglan.html
http://www.knittingfool.com/pages/topdown.guest.cfm
http://www.thedietdiary.com/blog/lucia/1823 is a top down yoke rather than raglan.