[Squeakland] My last message appears to have disappeared.

My last message appears to have disappeared. Probably just as well. I am having trouble with my mouse button settings and halo. I wanted to use squeak map and load one of the packages that sound so intriging. However, when I follow instructions on how to download the package, (first left click on choice and then right click) I just keep getting a holo as if I wanted to inspect the package loader pane. I know that there are a number of options to change how the halo works and how the mouse is mapped, but I feel very nervous about changing things. Could somebody give me a couple of pointers?

Shelagh