Begging your pardon, DebBEEEEE, but I am the Ranking Klutz of the Cathe forums, and if I can conquer Power Circuit anyone can!
The neat thing about Power Circuit's step choreography especially is that the little drills are fairly brief and repeated 4 times, giving you plenty of time to practice each one!
Don't get discouraged - just keep practicing it; in fact, you may want to do it a bit more frequently in the next few days / weeks than you might if you were following a standard rotation, so that you can get good at it quickly. Plus . . . if any move truly defeats you, you can always substitute an equally intense move that you like.
A-jock