How Do I Configure My Project With Iis 7.5 In My Local Machine (Windows 7)

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Error Summary
HTTP Error 500.19 - Internal Server Error
The requested page cannot be accessed because the related configuration data for the page is invalid.

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Detailed Error Information
Module	IIS Web Core
Notification	BeginRequest
Handler	Not yet determined
Error Code	0x80070021
Config Error	This configuration section cannot be used at this path. This happens when the section is locked at a parent level. Locking is either by default (overrideModeDefault="Deny"), or set explicitly by a location tag with overrideMode="Deny" or the legacy allowOverride="false".
Config File	\\?\D:\myproject\web.config

<pre lang="css">Requested URL   http://192.168.2.4:80/new
Physical Path   D:\myproject\new
Logon Method    Not yet determined
Logon User  Not yet determined

i have tried upto this,i dont know how to proceed.