Short Version:  Go to Ocate, NM.  Going West past town on 120, you’ll see Mile Marker 14 in ~3 miles.  Take a right.  Go down dirt road ~2 miles until you see a (small) sign on the right for Wheaton Creek Ranch Lodge.  You’ll see a couple rows of room to park.

Long Version: Go to Ocate, NM. Highway 120 passes through town going West (and sort of north).  Take it through town, if you’re coming from the East, ~3 miles after you exit town, you’ll see mile marker 14 where the road bends left.  Take a right on that road and head down ~2 miles, you’ll head into the valley and eventually pass a small stable on your left and then see a small wooden sign on the right for Wheaton Creek Lodge.