You'll go to a page where you can enter a title and description for your video. Put your title and description in then put some tags (siren fire truck emergency) and whatever category your video is. Afterwords, you'll go to a second page where you put the video file on and just let it upload.
I haven't tested uploading video on a dialup but I'm sure it will take a while.
Back on topic; I have a flashlight siren made in Hong Kong as well that orginally belonged to my aunt. Does it look like this one ?
![Image](http://img.photobucket.com/albums/v499/yuandrew/sirens/100_1067.jpg)