Tasker is good for that and more.
Settings profile plus is another good one.
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+1 on both apps.
I have both and both serve different purposes for me, although Tasker could do both jobs, I'm still getting into the details of programming it. Lots of options and a great website or examples and actual profiles. Settings Profile Plus is a little easier to use. The cost of each is not that much considering what I want them to do for me. For right at $10 you get both and what you may find out is that you won't need a bunch of other programs because these two will and can take the place of them. As an example, you can use both to save your battery, so no need for a specialized program for your battery savings, just program one to do it. I use Tasker to turn on the GPS only when I use certain programs and to turn it off when I exit the program. So the GPS only runs when I'm actually using it. The list is endless on what you can do with it.
Welcome to the world of Droid, I left the Blackberry world back during the summer and haven't looked back, but I have been on the hunt for those little things that my Storm2 did that the Droid X doesn't or in almost all cases doesn't do because I haven't found the program that does it.
Anyway, not to sound too much like a coolaide drinker, there's an app for that.