I figured since so many people are having Sims 2 Problems, I would post this. I have custom made this FAQ

SO appreciate and enjoy it
-EJ
Minimum System Requirements:
800 MHz processor
256 MB RAM
Windows(R) XP, Windows ME, Windows 98 or Windows 2000 Operating System.
At least 3.5 GB of hard drive space
A T&L-capable video card with at least 32 MB of video RAM:
ATI Radeon(TM) series (7000 or better)
VE series (see note below)
7000, 7200, 7500
8500, All-In-Wonder 8500
9000, 9200, 9500, 9600, 9700, 9800
X300, X600, X800
NVIDIA(R) Quadro(TM) series
Quadro, Quadro2, Quadro4
NVIDIA GeForce series (GeForce2 and better)
GeForce 2
GeForce 3, 3 Ti
GeForce 4, 4 Ti, MX 420, 440
GeForce FX 5200, 5600, 5700, 5800, 5900, 5950
GeForce 6600, 6800
NOTE: If you have a non-T&L capable video card, such as Intel Extreme Graphics or Radeon VE series, then you need at least a 2.0 GHz processor.
Recommended System Requirements
1.6 GHz Processor
512MB RAM
Windows XP, Windows 2000, Windows 98
5GB (or more) HD Space
Any ATI Radeon 9000 series video card or any NVidia GeForce4 or GeForceFX Video Card.
DirectX 9.0 or better.
FAQ:
Q. The sims freezes while on "The Sims 2" splash screen.
A. Either your video card or sound card is conflicting with DirectX 9 or you do not have enough free Memory/RAM to run the game.
Assuming The Sims 2 is on your desktop, try this: right click on The Sims 2 >In the target line, go all the way to end of the text and put in a space after the " > after the space type "-w" without the quotes > put in another space > type "-nosound" without the quotes. The Sims 2 should now start, if it does, then try updating your Video and Sound Drivers. If it does not start, contact Maxis Support via
www.thesims2.com Q. I can't install the Sims 2!
A. Your computer does not meet the system requirements. Ensure your computer meets all the requirements. Also ensure your sound and video drivers are DirectX 9 compatible. Another reason is because you have downloaded The Sims 2 from the net or You are trying to install the game from a copied disc.
Q. The Sims 2 has really bad performance when playing.
A. This occurs when you're video card doesn't fully meet the system requrements or because you do not have enough memory to run the game.
Q. The Sims 2 freezes while I'm playing.
A. Again this is due to your video card or because you do not have enough memory to run the game.
I'll add more questions as they come in.