DBlank- Thanks for the link, but I'm afraid I'm a little lost on what to do with that file. I saved it to the tablet, opened it in Application Manager (using "install from file"), but it gave an error message "Unable to install galculator. Incompatible application package". I am running OS2008, if that makes a difference.
(Confession: I'm a newbie and have only installed apps with one-click installs so far.)