laptop graphics cards prices

Are external graphics cards worth the money?

My laptop is an HP Pavilion Entertainment notebook that is barely 2 years old. I have an NVIDIA GeForce 7150m/nForce630m. I am playing World of Warcraft and in order to run without lagg I must use the lowest graphics. If i get an external graphics card will i be able to play with higher graphics? If so, which one would be the best to get for a decent price. Please post with your experiences if you have some.

There are external cards but they run SLOWER than your built-in ones. They are ONLY good for presentations and such.
—
Kasey C, PC guru since Apple II days
Make it idiot proof and someone will make a better idiot.

HP Touchsmart TM2 Laptop Review Specs and Price

Matrox TripleHead2Go Trriple Analog New TripleHead2Go External Box Adds Three Screens To Desktops and Laptops $275.53 Building on the award-winning DualHead2Go technology, Matrox is proud to present TripleHead2Go, a palm-sized box that uniquely allows you to add three monitors with a combined resolution of up to 3840 x 1024 to your workstation, gaming system or laptop, even if that system only supports a single display output. For example, connecting three 19 monitors would give your desktop an incredible 45 of t…