the vertical truing shouldn't be an issue with new stuff and unless the rim is truly buggered it shouldn't be neccessary with an old rim as long as you have done everything carefully and methodically and you have 24 / 28 / 32 / 36 spokes all of equal length then there should be no need to true the up and down just the side to side
as for dishing that's really only neccessary with road wheels as they aren't symetrical track hub are symetric (SP?)
the vertical truing shouldn't be an issue with new stuff and unless the rim is truly buggered it shouldn't be neccessary with an old rim as long as you have done everything carefully and methodically and you have 24 / 28 / 32 / 36 spokes all of equal length then there should be no need to true the up and down just the side to side
as for dishing that's really only neccessary with road wheels as they aren't symetrical track hub are symetric (SP?)