If it ain't broke. . . Unless the newer version has something you can't live without, I'd leave it alone.
Not sure what "software" is needed. Is there a USB or Firewire connector? Are you running XP? If so, it should recognize the camera up front. What does the software do? My Sony Mavica was recognized when I plugged it into my XP machine, showed as a "camera" and that was it.
Let us know more information.
I already own the Canon PowerShot A75 and recently purchased the Digital Rebel XT. The software that came with the Powershot is already on my computer and some of it is similar to the software that came with the Rebel...except maybe newer version & a few new things of course. My question is do I have to uninstall the older versions already on there and then install the new versions or will they just be replaced when I install the new cd?
Thanks!!!

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