Tim,
Below each picture, are the check boxes un-checked except for the picture you want ? I've forgotten to uncheck some and then the next time, loaded pix I didn't want to.
If you have Windows XP or Vista, click 'Start'. In the control panel, go into 'Internet Options (or Internet Explorer 'tools' if your using that web browser), on the 'Genera tab' page halfway down, click where it says "delete". Another window will pop up with a row of check boxes down the left side. Check all the boxes and click the delete button at the bottom. Try Photobucket again.
Paul.