Have you signed up yet for your FedEx account online? That's the first step, then contact your rep. As Dan said pack up a box just like you were going to ship, minus the snake of course. SCALES went out of business but you can order shipping supplies here
http://www.superiorenterprise.com
Once you and your acct have spoken and he is ready for you to ship the test box take it to the FedEx location, send it 2nd day, bill recipient, and they will pick up the tab. Once you get the test results back forward the e-mail/info to your rep. He will then contact the legal department and they will draw up a contract for you to sign and fax back to the rep. After that it takes a few days to complete the process.
Once you are certified and ready to ship you can print out the label on your PC and have the box packed and ready to go. I drop mine off at the FedEx staffed location, others just have the truck pick them up at their house/business.