If you ever want to learn the powerful program with all of the bells and whistles, Photoshop is the program. I still use only a fraction of its functionality, but I do use it all of the time. It's very powerful.

Picasa is a good one, but the main thing I had to do to get the funtionality from it was to make it look deeper into directories to find all of the places I store photos. I like the feature for printing contact sheets of whatever is in a given file. That is very useful.

SRS