HELP! Sims 2 Not Loading?!

Hi!
When I start sims 2 the ea games and maxis logo appear and then the video plays, then the loading screen appears after a matter of seconds, the music skips and a popup appears and says "the application has crashed. the application will now terminate"

Do I need more RAM or a better video card?:
At the moment I have

AMD Athlon 2000+
256mb RAM
GeForce 2 MX400 (64mb)
25gb Free Space

Bye the way I have updated my video an sound drivers (I know the video ones are right but I'm not sure if the sound river is right...Plays sound though..)
 
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