How to access Host-Machine on a Virtual Machine - XP Compatibility Mode - Windows-7

OK - Terms I'll use:
Outer machine: This is the real machine.  The Virtual Machine runs "inside" it.
Inner machine: This is the Virtual Machine - the XP Compatibility program.
Environment Window 7 64-bit
I am running an app in the XP Compatibility mode.  It works FINE.
However, for reasons I won't go into (trust me) we need the DATA that the app uses to be in the "Outer" machine.
We get errors accessing the data in the Outer machine.  We have turned off the Outer machine's firewalls.
We have made the Inner machine join the Outer machine's Workgroup.
Thank you
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In the Settings for your XP Mode virtual machine,  change the  Networking setting from Shared  Networking (NAT) to the entry for your  physical network  adapter. This makes your virtual machine just like any  other machine on  your network. The same rules of networking and file  sharing apply to  virtual machines as physical machines. You can map a  drive or create
On my Windows 7 with XP mode, the drives on my Win7 system just show up in the XP mode VM under My Computer as "C on XXXXXX", "D on XXXXXX", etc.

Check to see that the user that is set up on the XP mode VM is the same name and password as the one on the Windows 7 system, and you may need to disable simple file sharing.
DFlaschenAuthor Commented:
Well, the matter has been resolved.
The Trend Micro firewall has an extra level of "safety" called Protect Other Computers.
Once that was turned off, it worked.
So, how do you guys suggest I allocated the points?

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