From: Will Raffaele on
Took your advice and copied the files as you suggested.
From irb did: require 'oci8'
Still errors, but got past the 1st problem.
New Error:
OCIError: OCI Library Initialization Error
Did a search this error, got to http://www.ruby-forum.com/topic/96884
Copied to Ruby/bin
OCI.dll
oraociicus10.dll
Require 'oci8' returns true
Able to run tutorial which prints result set from Oracle table.

Success!

Thanks and regards to Takehiro and Brian.
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