Fastest way is by paying with credit card. There is a link for doing that at
http://www.ama-dist-8.org/Membership/index.php
The main renewal rush should be completely done... so it should take just about 10 days to get your card by signing up on-line. If no card shows up within 2 weeks of the on-line registration... e-mail here: jeannieh @ modelaircraft.org (delete the space each side of "@" ) and they'll fix it.