Question about memory usage

Ok so sorry if this seems like a noobish question but i just wanted to clarify something.
XP supports or see's about 4GB of memory and this includes the graphics ram ?
XP can only use 2GB on a single application/game ?

So if this is correct then a Graphics card with 1 GB of ram is using half the Ram available to the game ?
Where does this leave you with a 2GB card ?

Yours Confused

Mactronix
 

cjl

Splendid
The graphics ram doesn't count towards the game's allocation (but it does count towards the total 4GB quantity for the system). Therefore, the game will get 2GB of system memory.