Most DV cameras will show up in Windows XP using a WDM driver. Some
applications should be able to use WDM devices as a webcam source. But
many others rely on the older VfW driver system (which DV devices
generally don't support). However the specifics of the DV format means
that many WDM-capable applications still don't support direct access
to DV devices
More information on this issue can be found in this article:
And here on Skype's forum:
However, there are applications that provide a bridge between standard
DV devices and the video input requires by the application you have
WebcamDV( http://www.orangeware.com/endusers/webcamdv.html ) claims to
do exactly what you want. It is compatible with MSN, Skype and many
other applications (as listed on that page). A free trial is
available. The price of this software is $20-30.
Also, DVDriver ( http://www.dvdriver.com ) provides a very similar
driver. Again, a free trial is available, and the full product is $20.
One problem you may encounter in using a camcorder as a webcam is the
fact that most cameras will switch off automatically if not recording.
To get past this with most cameras you normally need to remove the
tape from the camera, and ensure the camera is connected to a power
adaptor, not running of battery.
Some cameras also have menu settings that disable the Firewire output
when the camera is in 'camera mode' that might need to be changed.
I hope this answers your question.