I want to download from sony handcam dcr-140

You may download a driver here.

If you mean a driver to transfer the video to your computer via firewire (ieee1394), then you are in luck! No driver is needed. As long as you have a correctly installed firewire port on your computer, a firewire connecting cable, and video editing software, you should be able to easily transfer video to your system.
Connect the camera to the computer via the firewire cable.
Turn on the camera.
Put the camera in playback mode.
Startup Windows Movie Maker or iMovie if on a Mac or whatever video program you prefer.
Should be an option for "capture" or "import from camera".
Use that and you are good to go!

get another cheap pc with xp

win vista and win 7doesn't support usb streaming. the usb driver for this model would not be compatible with your computer's OS. although, you were able to download PMB still this wouldn't work, it's basically an alternative software that you can use with the newer OS. still the device driver would not be installed. and you would get a message that "ilink connection is not detected". the reason you get that is bec the camcorder and the software is intended for use with the dv (ilink or ieee1394) connection. so if your computer has an ieee1394 card and you have a compatible ilink cable,then your good to go,it should be a plug-and-play connection (no drivers required). all you need then would be a video capturing software (like win moviemaker) to transfer videos from tape to PC. hope this helps. thanks :)

Extra.

Once you have downloaded the Manual, Finialising a Disc can be found on page 64.

Regards,

If your PC has DV link port, connect camera via DV link and transfer movie files in computer.
Other way is to hook camera with DVD recorder and burn DVD.
Thanks.

http://support.sony-europe.com/dime/downloads/downloads.aspx?site=,odw_en_GB&m=DCR-HC24E&f=usbdrven

you have install driver ...

You can have a trial of Video Download Studio.
it will help you with film downloading very well.
get a free trial from http://www.downloadvideos-convert.com/download-videos-music
hope it can help you more or less!

Click on this link here to get some drivers

You have to push the Easycam button on the side. When on the button emits blue color. When off it is dark.