Have you recently started using Flickr and loved the way it manages photos? Ever wanted to import your old photo collection from PicasaWeb Albums into your Flickr account?
PicasaWeb2Flickr Importer is what you want..
Download it from here,
PS: You can import photos to your flickr account from any public picasaweb album.. All you need to know is email of the owner (if you want to import private album, you need account password)