I edited a webpage last night, changing a graphic and the accompanying text, and after uploading the new files was puzzled to see no changes evident. I've cleared my cache, tried IE7, no joy, and it's the same this morning. I have heard vaguely of some hosts not updating files immediately, but never had this situation before with this host (Hosting Unlimited). The circuit diagram in the second section ("Setting the starting state") should show Cd, Rd and Rb instead of C4, R5 and R6 with the text changed to match. What's it show to you?