Here are a few sites to review and start some planning on alternative stops along the way to and from...

http://gorp.away.com/gorp/activity/byway/wy.html
Mostly camping oriented, but lots of pertinent info

http://www.fourparks.com/pages/Teton.html
A promo by four states, with good links

http://gf.state.wy.us/
Game and fish; get your license!

http://www.wyomingtourism.org/internal.cfm
What it says; the tourism board

We're going into and through some of the neatest country on the planet. With a bit of planning, you can hit the high spots. On a personal planning basis, Jellystone is still Yellowstone...same geysers and slow tourists stopping in the middle of the road to take pics of chipmunks and deer they probably have at home The fabulous rides are around the periphery of the park, in WY, MT and ID.

Caint wait!