+skill/+tree items

[Aldeth the Foppish Idiot]

At what alvl do +1/+2 to all skills on melee weapons come into the picture? Also what alvls are the +1/+2/+3 for a particular tree available - specifically looking at paladin and barbarian type weapons.

[thegiantturtle]

At what alvl do +1/+2 to all skills on melee weapons come into the picture? Also what alvls are the +1/+2/+3 for a particular tree available - specifically looking at paladin and barbarian type weapons.Affix Calculator (http://www.diabloii.nu/affixcalc/).