No problem.

My current specs run Sims 2 flawlessly as well Sims 3:
AMD Athlon 64 @ 3800
2 GB of DDR2 memory
ATI Radeon 1300XT series
Nvidia-based nforce motherboard capable of being upgraded to 4 GB of memory and up to 4000 (CPU)
DVD player
500GB Hard Drive
Windows XP Pro with SP3
*My machine is a basic gaming machine to play games on and nothing else. And to surf the Internet too.
The minimum specs for Sims 2 are half of what I have currently in my machine. So if you were to get the latest machine capable of running higher than 3Ghz and have more than 2 GB with Vista or Windows 7, you're pretty much set for playing Sims 2 and/or Sims 3.
The next time, try to direct your computer-related questions in Sims 2 where you can get more feedback from various members with different machines playing Sims 2/3.