Sorry to be dense but I can't figure out what I need to be able to install a new application to my SD card and then launch/run it from the card. I want to put a dictionary on the card and I want to keep things really simple. Is Powerrun sufficient? Do I need a separate launcher program? I have read the threads re zlauncher, etc., but I don't understand the basics. Can somebody set out a really brief tutorial on the subject -- or point me to one?

thanks