**What is a good UI metaphor for selecting from a set of configuration options?**

The tool I'm designing for has nearly 200 (!) inputs that can be set depending on your particular application and needs. You could think of the app as a single function with 200 input parameters. 

We know there are ~10 common sets of settings, so we want to give users a way of quickly picking one of the preconfigured settings based on their needs. But of course have the option of doing whatever tweaking is necessary.

The closest analogy or metaphor I can think of is like the preseq EQ settings on your stereo receiver. You pick one of the presets (Classical, Rock, Pop, etc), and then you have the option of tweaking any of the individual bars to your liking.

* Can you think of any software tools that do something like this?
* How can I give the user some idea as to which settings get changed/updated when
they change the preset?