Ok, it all makes sense now. For some reason I thought it should have been something like tblRegistry.Region.
So to help others in the future who are as new to this as I am, a sample coding to reference a custom scanned registry key would be:
---------------------------------
SELECT *
FROM
TblRegistry
WHERE
Valuename = 'Region'
---------------------------------
or in my case, I wanted to display all systems where the region value = CENTRAL. The code in its basic form:
---------------------------------
SELECT
TblRegistry.computername,
TblRegistry.Lastchanged
FROM
TblRegistry
WHERE
Valuename = 'Region' AND
Value = 'CENTRAL'
---------------------------------
Thanks for your help!