While this question is an older one, and I assume resolved by now, I will leave my answer to help others.
I had the same question about 60 days ago, and I had to contact IDEA. They were very prompt and to change the URL for me. Be sure to indicate what URL you would like your new URL to be and the reason for the change.
Hello Laurie Green,
I see David shows instead of Laurie; try editing your Profile. If that does not work, IDEA should be able to help you:
IDEA Health & Fitness Association
10455 Pacific Center Court
San Diego, CA 92121
Phone: (858) 535-8979, ext. 7
Toll-Free: (800) 999-4332, ext. 7
Fax: (858) 535-8234
Natalie aka NAPS 2 B Fit.