Real easy, from the east take 40 to 270N to Dorsett Rd. Exit on Dorsett and go left (West). The road will come to a "T" go right, down the hill and you're there! From the west (Rolla) just stay on 44 and take 270N.
We will start out by the lake and if it gets too crowded we can move back up the hill to the other end of the park.
If you want to look it up on mapquest the city is Maryland Heights.