C# - App.config Syntax For Structure?

I have difficulties figuring out a useful app.config structures for my program.What I am doing is writing a windows service, which watches several directories on a server for files being uploaded.My problem is making my program configurable for n folders when in each of those n folders, i need to watch for a different collection of filetypes

e.g. folder1: .dwg;
folder2: .dwg;.doc;.xls;

then when a new file is uploaded, for example a .dwg file to folder1,then i need to run program1 to convert the dwg to a dwf, and program2 to convert the dwg to a .swf.but that only if filetype is .dwg and folder = folder1. if a .dwg is uploaded for example to folder2, then it needs to be converted to a pdf.The closes i have come to make this configurable in a app.config file is this:

<Folder2 name="C:inetpubwwwrootCAFMFotos" filetypes=".dwg;.pdf;">
<action>
<add key="ExecutableAndPath" value="C:UsersMeDesktopverydocdwg2vec.exe"/>[code].........

I have difficulties bringing this to a usable from in app.config