Alright let me go through that list and see if I can remember. Note that this is all from memory so you'll have to excuse me if I get things wrong.
[list:1ujtdmvs][*:1ujtdmvs][b:1ujtdmvs]Forgotten Realms Campaign Setting[/b:1ujtdmvs]
Probably doesn't need much explanation. Is mostly just general rules with a very brief section on the two major drow deities (Eilistraee and Lolth; none of the others) and some rules for playing drow player characters.
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[*:1ujtdmvs][b:1ujtdmvs]Faiths and Pantheons[/b:1ujtdmvs]
Contains more detailed information on the entire drow pantheon. The entire bit on Eilistraee you can pretty much read on [url=
http://www.wizards.com/default.asp?x=dn ... a:1ujtdmvs]this page[/url:1ujtdmvs]. Though personally I tend to prefer the AD&D 2nd ed. [url=
http://www.amazon.com/exec/obidos/ASIN/ ... 4:1ujtdmvs]Demihuman Deities[/url:1ujtdmvs] over the new 3E book (most of what's in the new book is pretty much directly copied form the 2nd ed. book anyway).
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[*:1ujtdmvs][b:1ujtdmvs]Lords of Darkness[/b:1ujtdmvs]
Book about villainous organizations with, as I recall, an entire chapter on some Vhaeraunite house terrorizing part of the surface world.
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[*:1ujtdmvs][b:1ujtdmvs]Races of Faerûn[/b:1ujtdmvs]
Surprisingly little information on drow. I think it was pretty much limited to a paragraph somewhere (though I might be forgetting something; been a long while since I opened it). I recall it mostly being for turning certain monster races (that aren't already a player race) into a player race. The existing player races were more listed for completeness.
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[*:1ujtdmvs][b:1ujtdmvs]Underdark[/b:1ujtdmvs]
Though not entirely dedicated to drow (there's mindflayers and beholders and lots of other things in there as well), the Underdark is pretty much the drow setting. Even for surface drow the importance of the Underdark cannot be denied. As such it's probably a good book to have for someone interested in drow. If nothing else the included map (poster) of the Underdark can be useful.
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[*:1ujtdmvs][b:1ujtdmvs]City of the Spider Queen[/b:1ujtdmvs]
As I said this is an adventure module, which I haven't played yet so can't really comment on how good it is. But just from the title one can easily bet that a lot of it will take place in Menzoberranzan. Ties into the War of the Spider Queen novel series.
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[*:1ujtdmvs][b:1ujtdmvs]Player’s Guide to Faerûn[/b:1ujtdmvs]
As I recall this is mostly the "from 3E to 3.5E" book. Mostly rules, very little drow (if anything beyond a paragraph; I can't rightly remember).
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[*:1ujtdmvs][b:1ujtdmvs]Shining South[/b:1ujtdmvs]
Part of a series of books describing the various parts of the Forgotten Realms world. As such there are large parts dedicated to various lands and peoples that have absolutely nothing to do with drow. But part of the southern lands is Dambrath, which is a country rules by half-drow (who in turn are ruled by drow living in a nearby underground city). Additionally I personally had an interest in the Forest of Amtar, which lies just north of Dambrath, as I was planning to place the (now canceled) NWN2 server there.
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[*:1ujtdmvs][b:1ujtdmvs]Lost Empires of Faerûn[/b:1ujtdmvs]
I got this book mostly because I was interested in finding out some ancient history, some traces of pre-Descent Ilythiiri. But in that sense it truly felt more like an archaeological expedition as it came down to a scattered sentence here and there. Almost no drow in here (and for the record that's not a drow on the cover, but a Lich IIRC).
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[*:1ujtdmvs][b:1ujtdmvs]Champions of Valor[/b:1ujtdmvs]
I found that this book had a surprising amount of not just drow, but Eilistraeen information (noting that to a starving person even just a few bites feels like a full-course meal). It has some new spells, a new character background, feats, one of its class replacement levels (Darksong Knight) and a two-page description of one of Eilistraee's holy sites. Altogether probably about four or five pages worth.[/*

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Personally though I liked the [url=
http://www.eilistraee.com/temple/books_ ... p:1ujtdmvs]2nd ed sourcebooks[/url:1ujtdmvs] better, if you can find them. The rules might not entirely apply anymore, but the lore certainly still does. And those books tend to be richer than the newer 3E stuff.
Particularly "[url=
http://www.amazon.com/exec/obidos/ASIN/ ... 4:1ujtdmvs]Drow of the Underdark[/url:1ujtdmvs]" is pretty much a must have for anyone interested in drow. It goes into a [i:1ujtdmvs]lot[/i:1ujtdmvs] of detail about various aspects of drow life, including being the beginning of the drow language we've got a translator for on this site. Demihuman Deities goes into a [i:1ujtdmvs]lot[/i:1ujtdmvs] of detail about [i:1ujtdmvs]all[/i:1ujtdmvs] of the drow deities (and the elven deities, which can be interesting as well). After Drow of the Underdark I'd also consider this a must have.
The Menzoberranzan is great if you're interested in the city (or just general details about drow cities). Drizzt's Underdark guide is alright, but the new Underdark guide might be a bit better (though in fairness I haven't studied either in too much detail). Heroes' Lorebook contains some details on both Drizzt and Liriel, but is probably not that useful anymore (a lot of the rule details don't apply anymore and beyond that you get more on the characters from reading their books). And The Seven Sisters has some details on Qilué but was ultimately a bit disappointing. Oh, and I think there's a Skullport boxed set with details on The Promenade somewhere as well, but I've seen those details elsewhere as well.
Speaking of elsewhere, you might also have a quick look at [url=
http://www.eilistraee.com/temple/books_ ... p:1ujtdmvs]the magazines I listed[/url:1ujtdmvs], which I think you could still get some (quick check reveals that only the first and last one are still available) of them through Paizo's website. Dragon Issue #176 is pretty much where the whole Eilistraeen drow thing started (and includes that description on The Promenade IIRC). Dragon Issue #315 includes a new Eilistraeen prestige class that gives an interesting twist to things.
Anyway, hope any of that was even remotely helpful.
Love -x-x-x-
Shir'le