Facebook?

I just transferred all of my pictures and documents from my pc with "my book". All of my pictures show up in the iPhoto library. However, when I try to upload a pic on facebook none of my pictures are there. When I click upload photos and go to the iPhoto library to click the picture I want there are no pictures. It just inserts the file for the iPhoto app when I click on it. Does that make sense? How do I fix this? Thanks!

Select the pictures you want to upload FIRST, *then* click on the Facebook option in the menu.