Locations of the items:
Robe: Vongoethe
Amulet: Demogorgon
Boots: Kangaxx
Staff: Mage in Twisted Rune
Bracers: Firkraag
Helmet: Sendai
Belt: Matron Mother Ardulace
Cloak: Temple of Rillifane
Ring: Lavok


Item codes (for all the dirty cheaters out there)
wzrdamul - amulet
wzrdbag1 - Erevain's scrollcase with several high level spells inside. He gives it to you if you give up the items.
wzrdbelt - belt
wzrdboot - boot
wzrdbrac - bracers
wzrdclck - robe
wzrdhelm - circlet
wzrdring - ring
wzrdrobe - cloak
wzrdstaf - staff

Effects of the items:

Cloak:
    +2 AC Bonus
    +2 to all Saving throws

Ring:
    +10 to all Wild Surge checks
    -2 Spell casting speed
    +1 spell of 1st, 2nd and 7th level.
    Protection from level drain.

Robe:
    Armor Class: 2
    Magic Resistance: +25%
    +3 to Save vs. Spell

Amulet:
    Decreases spellcasting speed by two
    Immune to petrification
    +1 to Save vs. Petrification/Polymorph
    +1 to Save vs. Breath Weapons

Boots:
    Doubles movement rate
    Improved Alacrity once per day

Staff:
    Armor Class: +2 bonus
    Saving Throws: +2 bonus
    Equipped Abilities: Invisibility, Immunity to Charm, Protection From Evil

    Ability: Fireball-Lightning
     Damage: combined lightning and fireball damage
     Range: 150 feet
     Use: Three times per day

    Ability: Spell Trap
     Duration: 8 hours or until 30 spell levels have been trapped
     Use: Once per day

    Combat Ability (each hit): Dispel Magic  
    Thac0: +2 bonus (strikes as a +5 weapon)
    Damage: 2d6 +2
    Damage type: Crushing
    Weight: 3
    Speed Factor: 1
    Proficiency Type: Quarterstaff
    Type: 2-handed
    Requires: 5 Strength

Gauntlets:
    Memorize one extra spells of each level
    Immunity to backstab
    +1 Intelligence

Circlet:
    Vocalize, Infravision
    +1 Intelligence
    Mind Shield (Immune to Feeblemind, Dire Charm, etc.)
      
Belt:
    Improve spellcasting speed by one
    Protection from normal missiles
    +25% Magic Resistance