Do I need to download something else?

SOURCE: Unable to download through usb

I had the same problem and realized that my computer wasn't recognizing my camera. I went through my device manager and looked under portable devices, I could see that my camera had an error in its driver, so I right clicked on my camera and uninstalled the driver for my camera, and unplugged and plugged my camera back in. It instantly recognized my camera and reinstalled the driver.

SOURCE: I need the Digital Camera Solution CD-ROM or the download

here is all the software from canon
http://www.usa.canon.com/consumer/controller?act=ModelInfoAct&tabact=DownloadDetailTabAct&fcategoryid=322&modelid=13077
hope this helps

SOURCE: Canon zoombrowser Ex downloading problem

Try updating the Zoombrowser software.

If you have a connection to the camera, go into my computer and get images directly off the camera using scanner and camera wizard, microsoft's default program. This will at least allow you to transfer your images until you can resolve the software problem.

If you have no connection to the camera via your computer, you need to try some other troubleshooting steps to get a connection. I will post those below in the next post.

SOURCE: Computer not recognizing my camera when connected

Most of the issues can be solved by either reinstalling the software or by disconnecting and reconnecting the device.
In this case we can close in on three solutions
1) The USB drive in the system is not functioning. Try connecting any other USB devices to the same USB port and check whether it works or not. If the other device works well then it could be a problem with the data cable or with the port in the camera (usually firewire)

2) The data cable used to transfer data might have become faulty.Try using another data cable if possible and still the same issue continues then try connecting another camera to the system and if the other camera gets detected then the problem must be with the camera.

3) Try connecting the same camera to another system and see whether the camera gets detected. If no, then the port in the camera is defective.

After this we can close in on which could be faulty. data cable / Computer / Camera.

SOURCE: Canon zoombrowser Ex downloading problem

The sd1000 manual says that you will get this error when you have too many pictures on your memory card (aprox 1000). I am not sure how many I had on my 2GB card but it was a lot. I deleted about 50 - 100 pictures and then it started working again and the new pictures downloaded to the computer.