In the event that the camera and the computer does not see each other, restarting the services described below may help . (This requires Administrative priviliges with your PC. For additional assistance, refer to the computer user manual or consult your computer manufacturer.)
Accessories for the PowerShot SX10 IS. - Speedlite Transmitter [ST-E2] This allows the wireless control of receiver (remote) Speedlite flashes (except the Speedlite [220EX]). Power Supplies
Replacing the Date Battery. Be particularly careful to keep the date batteries out of the reach of children. Seek medical assistance immediately if a child swallows a battery since corrosive battery fluids can damage the stomach or intestinal walls.