yes you can, make a folder called wowcopy inside the world of warcraft folder in your application folder

COPY the following into it, from the main regular folder
cache
interface
logs
realmlist.wtf
world of warcraft.app
wtf

the last step is to create a directory alias to data in the wowcopy folder
(do this by dragging the 'data' folder into your wowcopy folder holding option (alt) and command (apple button)

my second instalation only takes up 95 megs of room, and a lot of that is just addons

I had a shellscript do mine, I'll try to dig it up.

the second copy will have its own interface and macros based on how you ahd it when you made the copy, if you make changes in the copy they will stay there and not go into the original one. meaning, make sure you play the same account with the same wow copy or you'll have to set up your interface twice.


sites:
http://forums.worldofwarcraft.com/th...75341906&sid=1

if the forum expired the important part:

I came up with a helpful shell script that will let you run two clients, but keep the cache separate between the two, and only uses about 17MB:

#!/bin/sh
p1="/Applications/World of Warcraft"
p2=$p1/WoWCopy
mkdir "$p2"
ln -s "$p1/Data" "$p2/Data"
cp "$p1/realmlist.wtf" "$p2/realmlist.wtf"
ditto -X "$p1/World of Warcraft.app" "$p2/World of Warcraft.app"

Copy/paste those 7 simple lines into a new TextEdit doc, and then save the file in your home directory as "wowcopy.sh", i.e. /Users/YourName/wowcopy.sh should be the path to the script document.

Open Terminal and type the following two commands:
chmod +x ~/wowcopy.sh
~/wowcopy.sh

Once you've done this, check your World of Warcraft folder for a new folder called WoWCopy. Inside should be three files: a Data folder, a realmlist.wtf text file, and a WoW.app. Launch the WoW.app!

(This is essentially what Aerdrig was recommending up above, but most people probably have no idea what symbolic links are, and much less how to create them via Terminal, so hopefully this'll help.)
said Fysh< slashdance > Eredar

if you run into errors running the shellscript it could be because you need an administrator to run it

if you run the game under an underprivileged account, before running the shell script type. if not skip to part 2.

1. su <your admin name>
then enter the password

2. then when running the command type
sudo chmod +x ~/wowcopy.sh
sudo ~/wowcopy.sh


(wow lotsa edits)