I've had some success with a webcam (a creative webcam 3 I believe)-
which is a general ov511 style video4linux compatible.
A short note to share in case others want to try...
After installing hotplug and usbview.
One should now be able to get a usb hard drive running (possibly
needing to install autofs too).
Plug in a webcam and usbview should come up with an ov511 entry.
Install gqcam (just a program to check if there's a picture rather
than any choice) and run from an xterm (within an installed vncserver
running as root -as per http://frontalot.is-a-geek.net)
. First try
shows an error - can't find /dev/video.
Check and yes - nothing there.
I then found makedev and its man page and dangerously tried:
cd /dev; ./MAKEDEV -v video
This tells you its spitting out lots of interfaces as /dev/videox
where x is a number.
Unplug and replug webcam (just to reconnect thro' hotplug?) then try
gqcam again and up pops a gui window with a slow picture at 640x480.
Also tried 'webcam' package but no gui came up -haven't checked if it
actually has one or it just was incompatible with Icewm.
Webcam server seems possible...