Well considering that card could *barely* handle III, VC, and SA, I think it is common sense and obvious that it WILL NOT even be enough to start IV(yet alone play it)...I have confirmed this on III, VC, and SA is how I know....
Depends on if you have the laptop version or the desktop version whether you can upgrade(as both laptops and desktops came with those cards)-I had an old XP desktop that had that card AND an old XP laptop that also had that card...