Question : error while installing Exchang 2010

Hi, i have an Windows Server 2008 Enterprise R2 running.

I installed AD and IIS. When i do the install of exchange it stops with error:

Summary: 5 item(s). 3 succeeded, 2 failed.
Elapsed time: 00:00:36


Organization Prerequisites
Completed

Warning:
Setup is going to prepare the organization for Exchange 2010 by using 'Setup /PrepareAD'. No Exchange 2007 server roles have been detected in this topology. After this operation, you will not be able to install any Exchange 2007 server roles.


Elapsed Time: 00:00:25


Languages Prerequisites
Completed

Elapsed Time: 00:00:01


Hub Transport Role Prerequisites
Completed

Warning:
Setup cannot verify that the 'Host' (A) record for this computer exists within the DNS database on server 127.0.0.1.


Elapsed Time: 00:00:03


Client Access Role Prerequisites
Failed

Error:
Unable to read data from the Metabase. Ensure that Microsoft Internet Information Services is installed.
Recommended Action: http://go.microsoft.com/fwlink/?linkid=30939&l=en&v=ExBPA.4&id=a4a4d339-4009-4fb7-b842-ca2ba79f13f0

Error:
Unable to access the 'Default Web Site' on this computer.
Recommended Action: http://go.microsoft.com/fwlink/?linkid=30939&l=en&v=ExBPA.4&id=aadc8176-1c47-49b7-83a0-9493a1093af1

Error:
The start mode for the Net.Tcp Port Sharing service must be set to Automatic before Setup can continue.

Warning:
Setup cannot verify that the 'Host' (A) record for this computer exists within the DNS database on server 127.0.0.1.


Elapsed Time: 00:00:02


Mailbox Role Prerequisites
Failed

Error:
Unable to read data from the Metabase. Ensure that Microsoft Internet Information Services is installed.
Recommended Action: http://go.microsoft.com/fwlink/?linkid=30939&l=en&v=ExBPA.4&id=a4a4d339-4009-4fb7-b842-ca2ba79f13f0

Warning:
Setup cannot verify that the 'Host' (A) record for this computer exists within the DNS database on server 127.0.0.1.


Elapsed Time: 00:00:02

Answer : error while installing Exchang 2010

make sure that IIS installed with IIS6 metabse comatability and management tool:
http://technet.microsoft.com/en-us/library/bb691354.aspx