AGREED ON PAYMENT PLAN WITH CAPITAL ONE AFTER JUDGEMENT WAS FILED. CAN'T AFFORD IT>>>SHOULD I SIGN AGREEMENT?

If you don't pay what was ordered, they will start garnishing your wages. Time to stop horsing around and pay your debts. If you have to, take a break from school for a semester or two and get a second job to pay this off. It's not going away, it's not getting any easier until you resolve it.