I'm sorry, but... dream on.
Think about it, the original PSX was released in 1994, and it's not until last year (2000) that we get a decent playable PSX emulator.
So, it takes 6 years.
Now, considering that the PS2 just came out recently, AND its architecture is a million times (well, I'm exaggerating here) more complicated than the PSX, it'll take a few years before we see a playable PS2 emulator.
Oh yeah... you'll probably need a dual Athlon7 5.6GHz and a GeForce 6 Ultra or an ATI 95000 with 1.5G of RAM to run it well.