Just a note that i took my ColdFusion 7 Certification friday at 4:00 PM.  Well, got an 88%!!  The studying payed off. My only material for studying was Ben Forta's Macromedia ColdFusion MX7 Certified Developer Study Guide which is a great study aid.  However, the best tool is actually using ColdFusion in you daily work.

 I can now upgrade my certification, Hooray!!