"is it possible to buy the graphics card seperatly from the laptop and install it later?"
The changeable laptop video card existed a few years ago but as people wanted lower prices and no viable STANDARD evolved those passed into the history of the PC.
The answer is no.
well I am looking to buy a new laptop but I just can't seem to find what I need.
1. 13.3-14.1" screen
2. weights less than 5 lbs
3. costs up to 1100$
4. needs a good graphics card with a seperate VRAM (I will be using the "Solidworks" 2008 program, how much seperate memory do you reckon that I need)?
and another question. is it possible to buy the graphics card seperatly from the laptop and install it later?