Vista - applicationHost.config File not fully installed

I have a Vista Ultimate machine and I attempted to enable IIS 7 but the
applicationHost.config file was not fully copied during the install. I get
an error, of course, stating that the file is not well-formed XML. I
attempted to uninstall IIS with the idea of reinstalling it to correct the
problem. The uninstall failed and the problem remains.

How can I fix this? Is there some way to get a full, default copy of this
file and copy it onto my machine a move on?

Thanks for the help.

Eagle