I would suggest following the instructions for Installing Market on the Coby Kyros MID7127 on Youtube. Uploaded by thekwa . Works on many Coby tablets.
On Youtube search for: "Android Market MID7127"
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THIS FIX DID NOT WORK--
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When Using This MID9742 FORUM START: HERE
(--http://androidforums.com/coby-kyros-mid9742--)
Then find the right thread
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