never ever have debt on cc's interest rate is in a word EXTORTIONATE. It should be cleared immediately and never ever incurred again, ie pay off each month in full, money saved would earn a good pension. do it now. But use the cards to the max as you get 6 weeks credit.
and the answer at the end is no. as a point of interest(sorry) look closely at the amount of interest you are actuall paying each month on both of these cards and that is the amount you will save each month by paying the full debt now. It may be easier said than done but at least get rid of one card in full. Then look at transferring to a 0% but they usaully last only for a fixed period ie 6/8/10 months.
noah