Most people these days you see using necros use a SS/Homoculous, Shako, Shaft/Bugged .08 Valor, Arm of King leoroic/Wiz spike, Silk Weeves, String of ears, FrostBurns, double sojs/Raven Frost and 1 soj, and Mara's Kleidescope, and they have full inventory with all Psn/Bone skill charms. Well to tell you the truth, that is a technique that so far, I have yet to see a necro beat a good char with. Maybe... with the exception of a barb if he is a slow runner. I have a good suggestion for a necro that is much cheaper, he is efficient enough to do any act by himself, fast enough to PA (power act) people, and deadly enough to take out all those Zypher zons, Ith barbs, and Occy ring/full inventory with lightning skill charm Sorcs so their T-storm and orb kill you in 1 hit =/ even if you have max resists in hell.

1st off: the gear

Helm: Trang Oul's (ber the helmet)
Armor: Trang Oul's (ber the armor)
Belt: Trang Oul's
Gloves: Trang Oul's
Shield: Trang Oul's (um the shield)
Rings: Doubl Sojs (for sorcs, double dwarfs or Frosts, depends)
Ammulet: Mara's Kleidescope
Weapon: Wiz Spike
Boots: Your choice: Nat's Mesh, Aldure's Advance, or Silk Weeves, or War Traveler's work well.

As far as charms go, I suggest small run walk charms with all resistances (shimmering small charms of inertia) or small run walk charms with +20 to life (shummering small charm of inertia) those work exceptionally well. Although you won't have any Dmg reduce, you're life and Bone Armor will be your way of living through physical hits. I'd suggest just a couple of Skill charms, 1 psn/bone and 1 curses charms

Skills to raise:

Skeletal mastery: lvl 20
Revive: lvl 20
Bone Armor: lvl 20
Bone Spirit: lvl 20

other skills that should be raised slightly to assist you are Poison Nova, Lower resist, and Golem mastery.

If you have any questions as of to how to use this necro to do just about anything, reply and ask, I will explain tactics with this type of necro later today, as of for now I have to go.