Access Denied to IIS6 site on Virtual Server 2005

1. I have created Virtual Machine under Virtual Server R2 SP1
with Windows 2003 as part of workgroup and installed IIS 6.0
2. I could ping this machine by IP address, and I am able to
access shared folder by using IP address on this Virtual Machine
3. I have a problem to access IIS on Virtual Machine from my
computer (is part of domain)


My request from HOST browser "http:\XXX.XXX.XXX.XXX" give response as:

ERROR
The requested URL could not be retrieved
--------------------------------------------------------------------------------
While trying to retrieve the URL: http://XXX.XXX.XXX.XXX/index.htm

The following error was encountered:
Access Denied.
Access control configuration prevents your request from being allowed
at this time. Please contact your service provider if you feel this is
incorrect.

Your cache administrator is webmaster.
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Generated Thu, 06 Sep 2007 21:33:48 GMT by company.com

Any idea about how to fix that?
Thank you


.