I still have no idea what you're talking about: positive and neutral of what?
Here, Kwame, I'll try to help you out. I still have no idea what you're trying to do. Typically, a DPST switch is used to switch both sides of a line to a load, like this:
**broken link removed**
(There are other uses for such a switch, but this is a very common one.) This removes both sides of the line from the device being powered when the switch is off. Is this what you're trying to do?