Another developer and I share a virtual dedicated server with numerous sites on it, 5 of which use DNN.  I tried to use the host's Plesk interface to auto setup my first DNN site (v3.?) which installs a DNN instance and database for each domain.  During the setup it required me to enter the subfolder where DNN should be installed, so I entered "dnn".  The installation completed perfectly and the site seems to work just fine, however I have to use www.mysite.com/dnn to access it.  What I want is to point the site root to the dnn folder I was forced to create.  So I opened IIS and repointed the home directory of the site to the dnn folder.  Now however I get the following error on Line 43 of my web.config:

Configuration Error

Parser Error Message: The module 'UrlRewrite' is already in the application and cannot be added again

Source Error:

Line 41:   <!-- HttpModules for Common Functionality -->
Line 42:   <httpModules>
Line 43:     <add name="UrlRewrite" type="DotNetNuke.HttpModules.UrlRewriteModule, DotNetNuke.HttpModules.UrlRewrite" />
Line 44:     <add name="Exception" type="DotNetNuke.HttpModules.ExceptionModule, DotNetNuke.HttpModules.Exception" />
Line 45:     <add name="UsersOnline" type="DotNetNuke.HttpModules.UsersOnlineModule, DotNetNuke.HttpModules.UsersOnline" />

I've tried changing all 5 of the DNN sites to their respective subfolder, but they all then gave the same error.  Normally I would have just installed DNN on my own rather than going through the automated Plesk interface, but being my first DNN site I went the auto route.

How can I point the domain to the subfoder?  Should I manually install DNN 4.x and skip the Plesk auto setup method to setup sites?  Suggestions?