The Wizards article with Drow with a PC writeup can be found here. It's a LFR thing, so you won't need to log in.
Thanks. I was avoiding getting the setting book in lieu of developing my own more fully, but I'll pick it up soon.
The guidelines are good, but superseded by the FRPG which has a few differences between it and the MM player writeup. The other benefit of buying the book is you'll get the full writeup for the Genasi, the swordmage class and the warlock Dark Pact, plus the paragon classes which quite a few of them don't require any real story changes to fit into other campaigns.