I'm probably gonna be the third responder to this post, but what the heck...
1. I am a undead hunter and my party is minsc valygar keldorn aerie and jan. Now i've been in the underdark for a while and just got the quest where i had killed the wrong beholder so now i got to go kill one of the 3 noble races. I plan to go through all three so whats the best order
Here is the order i plan to go through the city/lair things.. (1. Beholders (2. Fish thingies (3. err Mind flayers hehe
Do all three of them, even though you only need blood from one. There's lots of great loot and experience to be had.
Kuo-Toan Lair (Western tunnels): They're not marked, so you're going to have to do some poking around in the Underdark to find them. It's right below the Sfvirneblin (deep gnome) village. Easiest of the three, IMO. Heck, there's another battle in the lair that's harder than the battle for the blood. (As Six says, "place" is misleading. Items
don't work. There's a nearby fish that was most likely placed there to help you figure this one out.
Beholder Lair (Southern tunnels): You don't need to go far to get what you need, but poke around here anyway for major treasure. Chaotic Commands help against the Elder Orbs. There are plenty around here. And remember the cloak of
cheese mirroring you picked up in Shark City?
Illithid (Mind Flayer) Lair (Western tunnels): This place can only be difficult if a) you're not prepared for mind flayers and b) you're not attentive enough to the puzzles around you. There's one puzzle that might trip you up, but the answers to it can either be found on your person or in the lair itself.
2. Im really scared of the Ith.. Ithil..Mind Flayers and i probaly will do those last. Any other tips when im fighting them?
Best way to fight mind flayers: Give your best fighter(s) potions of genius and cast the cleric spell Chaotic Commands on them. Potions of genius are like healing potions for the mind, and chaotically commander characters can't be stunned by psionic blasts or confused by umber hulks. Stick your melee fighters right by one of the doors. Open it, and leave enough room in front of the door for only one or two mind flayers to stand. Have a mage fire a cloudkill to get rid of the umber hulks. Let your protected fighters clean up the mind flayers and your archers pepper their illithid hides with arrows, bolts, and stones.
3. I just bought this rope from this merchant in the drow city and he says it was jarlaxes when will he come and get it?
Remember what the merchant said about about the rope? More specifically,
where about using the rope? Try going there and seeing what happens.
Ok well im consider myself roleplaying this undead hunter but i can justify any before hand spells cast on my self by the logic "hmm walking into a city/lair full of enemies.. maybe i should cast haste .etc."
There's a difference between roleplaying and powergaming. You also know when you're walking right into a den of stinking evil or the Den of Seven Vales. So before you go covering Boo's nose and leaving no crevice untouched, by all means, buff up.
(A nice trick: Aerie can cast both cleric and mage spells from a minor sequencer or a spell sequencer. Spells cast by a sequencer are near instantaneous. Instead of casting your blessings and chantings and hastings before battle, have Aerie prep a spell sequencer with bless, chant, and haste. Find yourself in the heat of battle? Pause the game and have Aerie fire off that sequencer. Unpause the game, and presto! Tough and buff.

)