Exchange 2010 Uninstall

I need to do a complete Exchange uninstall or a reinstall but do not know how. We installed and it worked fine but anouther employee screwed up some IIS settings and now Exchange does not work. How do I reinstall Exchange. When I run setup it does not give me an otion for reinstall?? If this is not possible how do I manualy remove exchange 2010. I have mailboxes on the server but they are not being used.
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From Microsoft:

Modify or Remove Exchange Server 2010

You can either run Exchange 2010 Setup.exe or navigate to Control Panel to modify or remove Exchange 2010 (either server roles or an entire installation).

   1. The Maintenance Mode page of the Exchange Server 2010 Setup wizard begins the process of changing or removing your Exchange installation. Click Next to continue.
   2. On the Server Role Selection page, select the Exchange server roles that you want to add (if you're changing an installation) or remove (if you're removing one or more server roles or an entire installation). Click Next to continue.
   3. On the Readiness Checks page, view the status to determine if the organization and server role prerequisite checks completed successfully. If the prerequisites check doesn't complete successfully, review the Summary page to help troubleshoot and fix any issues that are preventing Setup from completing. If the checks have completed successfully, click Install if you want to add a server role or Uninstall to remove the specified server role(s) or the entire installation of Exchange 2010.
   4. On the Completion page, click Finish.
joshrosenAuthor Commented:
It tells me that I have mailboxes on the server and they need to be removed prior to uninstalling. I cannot connect to the managment console and the Shell errors out saying it cannot find the server. So I cannot remove the mailoxes. Ho do I manualy remove Exchange 2010 from AD? I can just format the server and start over buit I need to Clean AD!!
Can you install the exchange management console on another system and connect to the server to remove the mailboxes?
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joshrosenAuthor Commented:
This is the error I get in the Shell:

[gcexchange-01.gccorp.local] Connecting to remote server failed with the following error message : The WinRM client sen
t a request to an HTTP server and got a response saying the requested HTTP URL was not available. This is usually retur
ned by a HTTP server that does not support the WS-Management protocol. For more information, see the about_Remote_Troub
leshooting Help topic.
    + CategoryInfo          : OpenError: (System.Manageme....RemoteRunspace:RemoteRunspace) [], PSRemotingTransportExc
    + FullyQualifiedErrorId : PSSessionOpenFailed
Ah, errors related to WinRM IIS?  You can reinstall it through server manager if its missing.

To install the WinRM IIS extension

   1. In the Features Summary section of the Server Manager, click Add Features.
   2. In the Add Features Wizard, select WinRM IIS extension.
   3. Follow the wizard instructions, including installing the required software if any is indicated. For more information about using the Add Features Wizard, refer to theServer Manager online help.
joshrosenAuthor Commented:
Reinstalled WINRM IIS and still the same message!
Sorry about the delay... work happens ;)

Take a look at this exchange team blog:

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