My sidebar shows 6 clocks! Can't get them to change to anything else. I can get them to dissapear, but that doesn't solve the problem.

each sidebar gadget has it's own controls (hover over it with the mouse and you should get a little menu bar on the top right corner). on the control panel for each individual clock you should get an "x". use that to close 5 of the clocks. then click the "+" in the control panel at the very top of the sidebar and select the new gadgets you want to install.
"Tagger"