Populating a map!

Hello
I'm trying to figure out the best way to populate a game map with rocks, trees, and other objects.
I tried using a random generator method selecting spots in a 100m meter area while testing collisions. The problem I have is the random generator numbers are so close to each other it's not varied.
Then I end up with far less objects.
Do anyone have any suggestins or links?
Vivienne
I'm trying to figure out the best way to populate a game map with rocks, trees, and other objects.
I tried using a random generator method selecting spots in a 100m meter area while testing collisions. The problem I have is the random generator numbers are so close to each other it's not varied.
Then I end up with far less objects.
Do anyone have any suggestins or links?
Vivienne