Can i connect a samsung camcorder vdp453 to windows7 pls?

Most of these camcorders do not have proper usb support for video, so you'll have to buy a so-called video grabber or capture card. You can plug in the video grabber to usb and then connect dvi or firewire from your camcorder. Install the included software, configure your camera. Then press play and the video grabber will record the input from your camera.
When you buy one of those video grabbers, make sure it's a good one. Make sure powerful and stable software (which is compatible with windows 7) is included. Cheap things usually don't work. I've had this Chinese piece of junk for $10 which lagged and kept crashing my computer. Pinnacle was a lot more expensive but it works great and the fun will last a long time.