ASP.NET IIS Web.config [Internal Server Error]

I changed PC / Windows (XP -> 7) so IIS (6 -> 7,5) and trying to move my website

But I can't run my site from this server . . .
error :

Error description: Error HTTP 500.19 –
Internal Server Error

The requested page is not available
because of incorrect configuration
data for this page.

Error Details Module IIS Web Core
Notice BeginRequest Handler Not yet
determined Error 0x80070021
Configuration error This configuration
section can not be used in this way.
This happens when the section is
locked at the parent level. Locking is
either by default (overrideModeDefault
= "Deny"), or installed directly by the tag location with overrideMode =
"Deny" or inherited property
allowOverride = "false". The
configuration file \ \? \ D: \
Projects \ Flow WEB \ Sources \
web.config The requested URL-address
https: / / 192.168.0.172:443 /
Physical Path D: \ Projects \ Flow WEB
\ Sources Logon Method Not yet
determined Users who have logged on
yet to be determined Channel

Configuration

<handlers>   
<remove name="WebServiceHandlerFactory-Integrated" />

…

my web.config part :

    <modules>
        <remove name="ScriptModule" />
        <add name="ScriptModule" preCondition="managedHandler" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
    </modules>

    <handlers>
        <remove name="WebServiceHandlerFactory-Integrated" />
        <remove name="ScriptHandlerFactory" />
        <remove name="ScriptHandlerFactoryAppServices" />
        <remove name="ScriptResource" />
        <add name="ScriptHandlerFactory" verb="*" path="*.asmx" preCondition="integratedMode" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
        <add name="ScriptHandlerFactoryAppServices" verb="*" path="*_AppService.axd" preCondition="integratedMode" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
        <add name="ScriptResource" verb="GET,HEAD" path="ScriptResource.axd" preCondition="integratedMode" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
    </handlers>

So what's wrong ?

My trying :
if I make it –

        <modules allowDefinition="MachineToApplication" overrideModeDefault="Deny">
        <remove name="ScriptModule"/>
        <add name="ScriptModule" preCondition="managedHandler" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/></modules>
    <handlers overrideModeDefault="Deny">
        <remove name="WebServiceHandlerFactory-Integrated"/>

I've got error :
Unrecognized attribute "overrideModeDefault"

so I can't add it in configSections because it tells me that It already exist here.

and when I changed IIS to Read/Write (like on picture) Ive got a new error :

    Error description:
Error HTTP 404.3 - Not Found
The requested page can not be displayed because of the configuration expansion. If the page is a script, add a handler. If you need to download the file, add a MIME.
Error Details
Module StaticFileModule
Notice ExecuteRequestHandler
Handler StaticFile
Error 0x80070032
The requested URL-address https: / / 192.168.0.172:80 / Default.aspx
Physical Path D: \ Projects \ Flow WEB \ Sources \ Default.aspx
Anonymous Logon
Users who have logged Anonymous
The most likely reasons:

    * Perhaps there is no comparison handlers. By default, all content is processed by a handler static files.
    * Perhaps the component to which the access is not installed.
    * Corresponding MIME map is not activated for the website or application. Warning: Do not create a MIME map for content that users should not load - say, for the pages. ASPX or files. Config.
    * If ASP.NET is not installed.