Am I able to replace the graphics card on this laptop?

The Laptop in question is the ASUS R501VM-S3150V.

These are the specs:
Specifications

Features:

Warranty: 2 Years Global
OS: Win7 Home Premium 64Bit
CPU: Intel® Core i7 3610QM 2.3Ghz (Turbo 3.3G)/6M
Display: Extra Wide Angle View 15.6" LED HD (1366 x 768 )
Memory: 8GB DDR3-1600 + Bonus 4GB Memory (TOTAL 12GB)
Memory: 750GB 5400rpm
Optical: BR Combo
Chipset: Intel® HM76
Graphic: 2GB DDR3 NVIDIA® GT630M Support nVidia 3D Vision
Audio: Built-in speaker;Built-in microphone ;Bang & Olufsen ICEpower®;SonicFocus
Networking: 802.11 b/g/n, 10/100/1000
BT: N/A
Battery: 6 Cell / 5200mAh
Camera: 720P HD Low Lux Camera
Weight: 2.70 KG
Dimensions: 38.0(W) x 25.5(D) x 2.72 ~ 3.24 (H) cm
Card Reader: SD、MMC、MS
USB: 2x USB 3.0 2x USB 2.0
Ports: 1x Microphone-in jack;1x Headphone-out jack (S/PDIF);1x RJ45 LAN Jack for LAN insert;1x VGA Port (D-Sub);1x HDMI


link:http://www.centrecom.com.au/catalog/r501vm-s3150v-bonus...

I've been trying to read on this topic, but couldn't understand the whole mxm topic and how I would find if the Video Card was part of the motherboard or whatever; sorry, but thanks for the help!