Hi Pam,
I'm not sure which air carrier you have miles on, but the following are all offering bonuses for transfers. Depending on your situation, it may be worth paying to transfer miles from one account to another. I plan to do this with my Delta account and transfer 150,000 miles to Len's account. We'll then have enough for ROAR 3 if we can snag biz seats.
Delta - transfer miles and receive 100% bonus (deadline is May 31)
Continental - transfer miles and receive 20% bonus (deadline is June 30)
American is also offering a 30% bonus if you purchase miles. (I'm usually not a fan of purchasing miles unless I'm topping off my accounts.)
Andrea