Two n00b questions!

OK, I have just started designing scenery for myself in FSX, meaning when I can't find an add on, I make one. Anyway, I have two simple questions I am sure you can answer. First of all, when I have added and object, I am able to move it around with my mouse, but how do I rotate it? It is holding me back!
Second, where are the bunches of trees to place, rather that having to individuallly place a tree one by one by one....? Whoever answers this first gets a virtual handshake.



