Here's a little something I found online, I have no idea if it will help, but here goes:
Symptom:
After copying or installing a .NET web-application the following error is observed in the browser when trying to view the site:
Configuration Error
Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately
Cause
This error is generated because the default set of configuration values in web.config require IIS to treat the web site as an application but this has not been configured.
Remedy:
1. Run Internet Services Manager (under Control Panel > Administrative Tools)
2. Find the project in the list of projects. (Open up your computer in the list and look under "Default Web Site").
3. Bring up its properties (Right click > Properties).
4. If the "application name" (under "Application Settings" on the "Directory" tab) is greyed out then click '[Create]' and then '[OK]'.
I really hope this does something for ya! Good luck!