For the sake of photoshop, you click the image, and dependant on processor-speed, ram etc, it will load very fast.. The real problem in your case is rather the hassle of getting the image from your cam to your computer. I'm a Linux-guy, so I dont use windows/photoshop frequently. Although I did for several years (several years ago) and doesn't windows have something named Twain(32) which is a generic way to acquire images from scanners/cameras? Photoshop support this, and if the 10D does, it would probably be possible to access the file directly from the camera through cable. Then you got the problem of the USB-1.1 interface. 10D images usually is 2-2.5MB large downloading such a pic doesn't go instantly (although not taking ages either). I say you just try to see if they can be acquired through the TWAIN-interface with cable. If not, I can't see any fast way of doing it. The only "sane" way of transfering 10D images is with a USB-2.0 or firewire card-reader. But in your position, that would be awfully slow, as it would mean removing your CF from the cam :/