Your best bet would probably be to try to sell it privately for the payoff amount. A dealer is gonna screw you on a trade, and your new payments are going to include payoff amount of the Kia + the cost of the new car. If you sell it privately and payoff the loan on the Kia, you can go finance a less expensive car. Next time make sure you can afford the payments before purchasing the car, good luck!

...07 Kia Spectra, bought 6 mon ago? I need to find a car that I can afford easily, the payments are over 350 a month! Any ideas on new or used? Please help me !

Yeah!! you more than likely owe more on it than it is worth. They will take it in as a trade, but you better have a jar of vasoleen.