Certain NVIDIA video cards have been known to lock up in World of Warcraft and other video intensive situations.
Related links below has the link to Blizzard where it lists the supported cards.
What model Nvidia card is it. But from what you have said, yes it should run it fine although i cannot guarentee until i know what Nvidia graphics card you are considering using.
Nvidia and AVI put out some good cheap cards, i have a $50 Nvidia and WoW runs perfectly
The MacBook's Nvidia 9400M works well with World Of Warcraft. (See links below)
yes! They are really important in world of warcraft. no graphics card = no graphics in wow.
It will surely play it VERY well!!! I am running a old iMac with the 8400m card and it plays it at roughly 30-40fps. Which is pretty darn good!
yes
Yes nvidia cards are support for NFS Hot Purist but some nvidia card are not supported minimum nvidia card are 7600gs..
Buy a game card or use a credit card
I have the same card on my laptop I get around 500-750 fps on ultra in Stormwind on a busyday I was getting 780fps in cata zones
To play WoW Cataclysm it is recommended to have a NVIDIA GeForce FX or ATI Radeon 9500 video card or better. If you were to buy a $40 or more graphics card now you should be fine. That doesn't mean it will run with full graphics just that it will work decently.
You do not necessarily need a game card but you need to have a subscribed payed for account, time on world of warcraft must be payed for by credit/debit card, game card pre purchased or other promotional offers. =]
You have either not payed for World of warcraft with the monthly fee or your key card number has not been accepted.