for whatever reason, i was able to take pictures with my camera before i loaded the software on my system. then my pics disappeared and i was able to take more pics and download them to my computer, BUT i can only take the pics now when it's hooked up to my computer. i can't get it to turn on again without it being hooked up. i tried uninstalling and re-installing the software (wasn't able to chose Windows XP - btw), but i still can't get it to work on its own anymore. any suggestions??