Hi again, apparently you got past the boot problem. You're making progress. I'm also moving this thread to the Coby Generation 2 section for you. If you need any additional help with that tablet, just click that link and post your questions in the Coby section where the people who can help you are. Good luck!
If you are still using the original/official firmware on it (Froyo / Android 2.2) then try restoring the original firmware first. If it doesn't work and still under waranty, I suggest that you try to ask for a replacement.