Way to go Mike.....That is great news! Here is the link . It can be reserved on this site.
http://www.reserveamerica.com/campsiteF ... rkId=70100
This is the Ranger District. I don't know if you can reserve over the phone but they can answer your questions..
Bridger-Teton National Forest
Pinedale Ranger District
29 E. Fremont Lake Road
PO Box 220
Pinedale, WY 82941
(307) 367-4326