You can often get your rates lowered on your credit cards by calling and asking to have them lowered. If they balk at lowering your rate, threaten to transfer the balance to another card. This tactic works best if you have been paying on time.
You can pay off your credit cards completely on your own using the snowball method:
First, stop using your credit cards. Take them out of your wallet and leave them at home. (I've heard of people who freeze them in a block of ice to make sure they have to think before using the ccs.)
Second, pick either your card with highest interest rate or with lowest balance. Pay minimum on all other cards, but put every month, put extra money toward your chosen credit card bill -- you may have to work to figure out somewhere to cut back in order to get the extra money, but it's worth it!
Then, when that credit card is completely paid off, take the money you had been putting toward it's bills and add that to your payment on one of the other cards. And when that one is paid off, use all of that money to pay down the next card. Etc., etc.
This method also works well to pay off other debts. We've paid off thousands of dollars of debt in the last few years using the snowball method.
Good Luck!