You can get an enchanter friend to help you do this quest.
http://wiki.project1999.com/Bottle_of_Red_Wine
Basically you will need the enchanter to charm this guy, move him out of the corner (so you can stand behind him) and then mem blur him. Then you turn in like 6 backpacks full of red wine stacks. You also need to invis in ofcourse (you're kos in Neriak, duh). Doing this will let you sell/bank in the first 2 zones of Neriak. It doesn't however improve Neriak third gate faction, so you'll always be KOS there.
You will also be sick of the quest completion noise by the time you're done =). You get to hear it about 700 times.