I have recently purchased a Canon EOS 20D-I have had for some time a Quantum QFlash and Turbo battery charger-Can I use this equipment with my new camera? If so, what sort of modifications must be made or add on's purchased to allow them work together if any? Any help or advice will be greatly appreciated....... Thanks,j :)

Find out how much voltage is passed through the sync cord. The 20D is rated for 250 volts via the PC port only. The hot shoe is rated for 6 volts as I understand. If your battery pack is rated for more, and it's all going through the cord, you could damage the camera.

The bad thing is that this isn't an instant consequence sort of deal. It might take a while for the damage to show, and meanwhile you think everything is going fine because it seems to be working.

Depends, which Model T do you have? What camera did you use it on previously?

One thing to check is here: http://www.adorama.com/QTQFT4D.html?searchinfo=quantum&item_no=1

Here: http://www.vdhphoto.com/quantum/pages/qflash.htm

Or through Quantums site they only list the T5D flash for the 20D http://www.qbm.com

JS

Minolta 7000i-

I emailed quantum and this is the response I got back from them:
Thank you for inquiry. Unfortunately, there is no way to dedicate a QFT to a 20D. The QFT is specifically designed for film cameras and there is no way to upgrade that model. You can still use the QFT in the auto or manual mode, you would just need to set it independent of the 20D.
However, when I called my camera store to ask them they assured me it is 'no big deal'-