Congrats on making it to the top. That's a nice climb and I'm sure it's harder still if your not acclimated to the altitude. When I have flatlanders come to Colorado (mostly for archery hunting) I usually have them stay at my place in Denver a couple days if they can. Even 2 days in Denver helps to become more accustomed to the elevation. Here is a link to a thread about Mnt Evans I started a couple weeks back.
http://www.bikeforums.net/showthread...vans-14-260-ft