www.lrclv.com
We (my wife and I) used to be members of this club. Lots of fun, very relaxed group, they just enjoy wheeling and hanging out.
There are tons of places to go wheeling around Vegas. Red Rock Canyon, the national forrest around Mt. Charelston, south of Vegas along the colorado river, southern Utah, northern AZ (north Grand Canyon rim), Valley of Fire (north east of the city), southern CA....you're in a 4wheelers playground as much as you are in an adults playground (Sin City).
By the way, if your avatar is true about you, I hope you are filfthy rich....otherwise you'll be broke!! HA!