I was HAZMAT trained by SafetyRegulations.com and I received my certificate. However, I was unable to ship with Fedex.com.
After a quick phone call to Safety Regulations, I was informed that I needed to call 800-GO FEDEX and ask for Dangerous Goods on the voice prompt. FedEx then walked me through setting up a Dangerous Goods account. During the process I had to provide the HAZMAT certificate from Safety Regulations.