Sorry I was not more clear. I will be building a quad core, 4 gig system with a velociraptor 10k hard drive. I won't be doing this with my laptop. As far as a video card goes, I'll buy one of the newer model Nvidia cards. I'm interested in this just to see if I'll be able to do it with the setup I'm thinking about. I don't see any reason why this system couldn't handle 5 instances of wow.

Two 22" or 24" monitors would probably be the option I'll go.

"the slaves are "maximised" into 4 sectors on the 22". Effectively the 4 wows are arranged 2 along the top, 2 on the bottom, each has the same amount of space on the monitor."

That's exactly what I'm after. If I had to, I could add a second video card to handle the other monitors right?

Edit:
lacitpo,
I saw your post after I posted. Thanks for the info. I'm thinking about a 5 mage setup or a 4 mage 1 priest setup. I just found out that this hobby existed today so I'm still learning . I'll do my best to take your advice into consideration.

What setup do you have and how do you like it?