That's your computer aknowledging that you have a new device hooked up. DSC is usually the Sony format, so I assume it's a SONY camera. Anyway, if it doesn't ask for any drivers, then you should be good to go. Go into "MY COMPUTER" and it should show a new drive labeled "Memory Stick" or somethinf like that. Click on that and you see your pictures. In XP, the wizard will come up and ask you what you want to do (i;e copy to hard drive etc.)