I take it you are using Sony's software CD supplied with the camera?
Does your camera have a USB port, indeed what model is it?
Sony does not warrant the camera software for Vista 64-bit. On my machine it kept screwing up an essential Vista file requiring use of the Vista DVD-ROM repair utility.
Do not use the Sony software at all.
To get files over, for my HDR-SR8E (AVCHD HDTV disk storage) I just plugged the camera into the computer with the USB lead, told the camera to connect to the computer, Vista recognised a new USB mass storage device, I copied to PC disk the root folders of the camera disk, then I disconnected by telling Vista to safely retire the device then telling the camera to come out of the computer mode.
For me, the AVCHD files don't play because Windows Media Player version 11 does not have the right codec, and I will not connect to the internet and allow it to search for one. I am later getting Sony Vegas Pro 8 video editor and that has the ability to play.
I copied my files again, to a Western Digital MyBook external USB 500Gb disk drive, which is by default formatted as FAT32, then plugged that into my Play Station 3 and the PS3 played the files fine. So this works - for the SR8E anyway.