Are you mainly doing pvp or pvm?
Figuring he mentioned Fire/Poison weps, I think that's a pvp template.
@Uoaddict:
Enough Necro/SS to cast the spells that you want to cast, then the rest of your skills for weapons, tactics/macing/anat, resist/healing. Diamond maces are pretty mean as a necro dexxer :>
Just remember, Necro allows you to cast the spell, SS affects how long it lasts on your target and how much damage say, wither or pain spike will do. Pain spike also does true damage, and will be greater towards targets without any resisting spells.