Ion Todirel said:
also if you have exotic settings, you may want to manually serialize your config (somewhere in AppData directory), instead of messing with custom sections....
If your going to do that, this is a good guide as to where to put it http://blogs.msdn.com/cjacks/archive/2008/02/05/where-should-i-write-program-data-instead-of-program-files.aspx