I believe the original poster wanted to know how to create a dipole. If you want to make a dipole
with a vertical configuration, you have to use a method which keeps the radiators vertical and the
feedline horizontal for some part of a wavelength. Try this:

Make a TEE shaped assembly of PVC pipe using a TEE connector, one piece of PVC about one metre long
and two pieces of PVC about 25 centimeters long. The longer pipe mounts horizontally and the
shorter pipes are oriented vertically. Cement all the pieces into the TEE. Strip the outer jacket
off a length of RG58 about 20 inches from the end. Make an opening in the braid next to the outer
jacket and pull the center conductor through so that the braid and center conductor are sepatate.
Push the RG58 into the long pipe and make the center conductor bend up into the upper vertical PVC
and pull the braid down through the lower vertical PVC. If necessary, prune the center conductor
and braid for best SWR, but the SWR should probably be low enough as is.

-ken-