are the MTS extension files. Other files include a "database" tracking file that keeps track of the video and still image files in the different directors - and a few other camcorder "operating system" specific housekeeping files.
Do not change or move any of the files in the camcorder and do not rename anything in the camcorder's directory structure.
You probably don't need the software that came with the camcorder - especially if you want to do any editing. We've had several posts/threads that indicate it is useless. But you will need a video editing application that can deal with AVCHD/MTS compressed video files. (MovieMaker bundled with Vista cannot handle MTS files.) Sony Vegas and Adobe Premiere generally float to the top.
Other than the computers manufacturer and operating system, you did not tell us anything about the computer, so we have no way to know if it is at least minimally configured to deal with AVCHD/MTS video. Ideally, your computer's CPU, RAM and external hard drive will exceed the requirements to deal with AVCHD video.
I've recentl bought a new laptop with Vista. I am trying to download some movies from my Canon Vixia HF10 to my PC. Vista can access the camera as a disk but I see there tons of files while I know thre should be only two movies. I can't open these files.
I do not have the original software I got when buying the camcorder.
Any ideas how I ca get the files to my PC and play them?