#1 - Is it possible to ride a century on a hybrid bike?

Sure. I'm not sure I would want to, but I see people doing it!


#2 - Short story is I was a good rider (for me) @ 40+ mile rides. I fell ill. I have not been riding for 2 years. I am back at square one. Is it possible to train for a century ride - metric or mile - in 3 months or is that overshooting it?

Yes, it's doable, but probably not easy, and will take committment to get all the miles and time in.


Lastly, #3 - can anyone suggest a great site for how to train for a century/metric century.

Last month's Bicyling magazine had a 10 week training program for centuries included in it. It also had a shorter one for shorter distances (metric century). The plan looked like it would be adequate to me. Here's the plan reprinted online:
http://www.bicycling.com/article/0,6...9050-1,00.html