There are many ways you can get back onto a place that banns you, but since this board is a place that can ban you, I don't feel right telling you ways to circumvent IP blockers (Which GOF uses to make sure banned spammers don't just create a new account and start spamming again). I don't think the admins here would be too happy about me telling you how to get passed that kind of system.

Besides, I don't even know why you were banned.

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If you want information about circumventing IP blockers, you'll have to get that information someplace other than a board which employs the same kind of system you want to get passed.

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Is it ok to use the same E-mail address from the first accout or use a different address???
It doesn't matter what email address you use right now. You can't get back on because your IP is blocked. If you find a way to circumvent the IP blocker, you'll also have to also use a different email address.