I hate to dissappoint you, or curb your enthusiasm, but the world Blizzard has set-up seems to have no place for smiths or craftsmen. I'm a smith, and haven't made anything of use for weeks other then maybe a sharpening stone here and there, or mithril spurs. Although smithing may seem to be a dream skill for paladins--trust me, I know it seems to be. I am one--it isn't. The materials you use to make even blue items are outrageous, and the end product sells for a third of what the materials do. Again, if you really want to take up smithing, I would advise you to take a look at a forum I found...it states again what I have said, though it also shows the lack of intrest on Blizzard's part in the waxing of drop grinding and the waning of craftsmen.
The plight of the smith There seems to be no place in the world for those of us who toil in the soot and grime of a forge to create masterpieces. The world is focussed on dungeons and what they can unearth under the bodies of fallen foes.
-Lleiraæn