Hey everyone. I've narrowed choice of laptop to one. My laptops purpose will be for gaming, general web-browsing/video-watching and schoolwork. It will essentially be my desktop, since my current desktop is 7 years old. Mobility is not an issue, it only needs to be able to travel in a car 
I plan on keeping this laptop for 5 years plus, so please, consider that when advising me!
My decision is an alienware m15x:
The alienware m15x with the following specs is a price of $700:
I'd like to know if you think this is a good deal, and what is the best upgrade i could get for GPU. I know you can upgrade right up to 6990m, but what is the most effective and safe GPU upgrade for this system?

I plan on keeping this laptop for 5 years plus, so please, consider that when advising me!
My decision is an alienware m15x:
The alienware m15x with the following specs is a price of $700:
I'd like to know if you think this is a good deal, and what is the best upgrade i could get for GPU. I know you can upgrade right up to 6990m, but what is the most effective and safe GPU upgrade for this system?
Screen:
Full HD (1080p) WLED (1920 x 1080) Display Panel
CPU:
Intel Core i7-940XM Processor (2.13GHz, 4Core/8Threads, 8M cache)
Memory: 8GB 1333MHz DDR3 SDRAM(2x4GB)
Graphic:
1GB GDDR3 NVIDIA(R) GeForce(R) GTX 260M
Hard disk:
500GB 7200RPM SATA Hard Drive
Optical:
Dual Layer Blu-ray Combo (BR-ROM, DVD+/-RW, CD-RW)
Wireless:
WiFi Link 5300 (802.11a/g/n) Half Mini-card, Dell(TM) Wireless 370 Bluetooth Internal (2.1) mini-card
OS and COA label
Windows(R) 7 Ultimate 64bit Eng Edition