I don't know if I'll have much success in this forum because this is more of a computer problem than a photographic issue but I'll post in case someone else has dealt with the problem. I purchased a laptop with the Vista operating system and have two problems: 1) the PC does not recognize the D-80 when connected for downloading photos via a USB port. It simply does not recognize the "device". My desktop with the XP OS, has no problem. and 2) when I load the SD chip into the integrated card reader on the computer, about 25% of the files are corrupted and can not be used. I can still take the chip and download the files on the system that uses XP but I'd like to be able to use the laptop when needed. Any ideas?