You can get a lot of mileage out of a drow by picking something that
a) likes Dex
b) likes a bonus to Int or Cha
c) had at least a d6 for hit dice
d) likes SR, so can have one good save
One choice is a drow bard. Bards don't depend on throwing out a Big Spell every round; a lot of the time they're just going to be casting haste or some power up of hold person. A slight delay in bard abilities is no biggie, either. What do you get in return? A bard with good Dex AND Int AND Cha. Although not capable of casting, say, one or two high level spells, they are going to have a lot of staying power.
Another is the swashbuckler from CW, at least until 3rd level.... good Dex, Int bonus to damage.
Drow can be bladesingers... you're not going to have a high caster level for a bladesigner, anyway. But a drow swashbuckler/wizard has Int to armor class plus a good Dex, Int to damage, Int for bonus spells and DCs, good skill points, a combination of good saves and SR.
Drow duskblade. Nuff said.
Drow wilders are good for melee and blasting, and have SR/PR.
Drow hexblades are very solid. Cha for spells and curses, good Dex with light armor, mettle plus SR is a pretty good defense.
Drow warlock. Who needs caster level when you can shoot things all day? Good Dex, good DCs on invocations, good skill points.
Drow rogue. With the LA, their high Dex and Int means their skill ratings are actually only one point lower.
Drow knights are fascinatingly effective. Good challenges, d12s make up for Con, Int and Wis can serve as dump stats.
Sorcerer. You get a good Cha, which somewhat makes up for two caster levels, and you get +Int, improving your skills. Dex never hurts a caster, either.
Bad drow choices:
Single classed barbarian loses Str and Con, and gains... darkvision and SR. Lame!
Single classed fighter.... low Str and Con is weak, and a lower level means less feats.
Single classed cleric... although very fashionable for the evil NPC set, with +2 LA, you're losing caster level, hit dice, you get no Wisdom bonus, and a high Dex doesn't synergize well with medium and heavy armors. A low Str and Con make you a weak melee cleric, and crossbow proficiency makes for a weak cleric archer.