[KarmaKiller]

Ok.
Well here's the deal. Really, for ~$700, I don't think your really gonna find anything better. The cheapest lappy I found on egg with a dedicated graphics card is $799.

I understand WoW isn't the most graphically intensive game out there, so I guess you might be able to get by with onboard video. But really it's well worth it to step up to something like:
Newegg.com - Acer Aspire AS6930-6560 NoteBook Intel Core 2 Duo T5800(2.00GHz) 16" Wide XGA 4GB Memory 320GB HDD DVD Super Multi NVIDIA GeForce 9600M GS - Laptops / Notebooks