Screencast question

I enjoyed making the screencast, and I think this could be a useful tool for my classroom. The only problem I had was showing all of my screen for the screencast.  I could not show both the slide and the toolbars at the top of the page. Did anyone else have that problem?  How can I fix that if I choose to create more screencasts?  I tried to play around with it quite a bit, but could never figure it out.