hi phil. ignore pauls attachments. he's using an older version .
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make sure both the shoestring adapter is plugged into your usb port. The stereo cable into shoestring adapter and the other end to the camera. Same goes with the white usb cable which came with the camera.
- Open DSLR Focus
- Click Application then Connect to Camera
- Ensure that your camera is on and click Connect
- Select Rebel_XT from dropdown box and click Ok
That should get you connected. Once that you are connected, click Camera Control then Blub Exposure Setup then Port Setup. Click 'Test Port' button in Serial Port Setup. Wait a few seconds and you should see a green button on the bottom of the screen saying DSUSB connected. Close out of the Blub Exposure screen.
Close Capture Mode screen and then reopen it. <-- you have to do this so DSLR Focus will reconise the DSUSB device.
Gluck .