PC Games Tom Clancy's Rainbow Six


AKA Ass-Bandit
I have a couple of questions about this game:

1) Does anyone know if it's Abandonware or not?
1a) If it's not abandonware, does anyone know where I can get hold of a copy, besides eBay? I'm specifically looking for the PC version. Having bought the PS version several years ago, I was sorely disapointed in how it was inferior to the PC version

2) What are everyone's thoughts about the first in the series? From the demo I played, I found it to be great. I loves me a good tactical shooter.