What kind of spokes for Giant PSL0 wheelset What specific spokes do I need for Giant PSL0s wheelset. I know they are DT Swiss but what kind and maybe where to get them.
Are you building this wheel yourself? There's a bit of planning that goes into building a wheel. As Daniel mentioned, length and gauge are important, but even before that you must have a hub that will accommodate the same number of spokes that the wheel will. Afterward, the number of spokes you will need will dictate what lacing pattern you should use. 

As always, Sheldon has the answers.