1. Click the format and video size you wish to download.
This opens up another window.
2. In the new window, wait for the video to complete downloading.
3. Right-click on the video and choose "save as..."

QUICKTIME format
Large 720 x 480 pixles
Medium 426 x 320 pixels
Small 320 x 240 pixels

WINDOWS MEDIA format
Large 720 x 480 pixels
Medium 426 x 320 pixels
Small 320 x 240 pixels