easy to install gallery plugin with upload feature

You can upload images and files through WordPress’ upload feature in the Options section.

If you search the forum for gallery plugin or photoblog, you should find a lot of recommendations.

Also, check out the various plugins at:

http://codex.wordpress.org/Plugins
http://www.wp-plugins.org/
http://www.wp-plugins.net/
http://www.bloggingpro.com/archives/category/wordpress-plugins/
http://redalt.com/External/plugins.php