are you sure ? ,because sometime my memory rise up to 1.97 GB or more sometime and i think geting an additional 2GB would help.
Try it see what happens. More RAM can't hurt things even if you end up with a new video card eventually. All depends on your system and what's running on it. Generally, 2 gig is enough for games to load and run, look at the "recomended" specs for the game. But I do know that the 220 is not a very fast gaming card, it's not even a "gaming" card really, it's ranked towards the slow end of video cards. The lowest true recommended card is the Radeon 5570 which is ranked 142 on the full card rankings, the nvidia 220 is 302 in the rankings. Big difference between them.