Via the Application Manager, add this to your catalogs:

http://www.maemo.org.br/minimo
distribution:bora
components: user

That should allow you to get all of the components. I'd say add the above to the Application Manager, quit the AM, then via Xterm use the "apt-get install minimo" (sans quotation marks) command to install and say yes to the two prompts... and that should install Minimo without incident.

Or read this existing thread... thought it looked familiar.