I cant take pictures becasue its almost 11pm. But i recommend just putting on some old clothes, and get down and dirty. Just go take a look, its hard to know what everyone is telling you if you cant visualize the task at hand.
You say ur using adjustable wrench, well then you need 2 of them. All I can say is go look to see where they go. Good luck, me and my dad, (mostly my dad) put my steps on(took maybe 30minutes each), all i did was hold it up.
If you take off one side of the bar, the other side might bend, so either you use something to hold it up, or have someone hold it up (thats what I did)

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2007 Black H3, Adventure Package, Chrome Appearance, Chrome Cross Bars, Moonroof, Tow Package, Chrome Tubular Assist Steps. "My golly, this is by far the best looking 2007 H3 you will ever never witness"
My H3 is gods gift to man.