Ok - for I do not have LindowsOS 4.0 but 4.5 and don't know if they are similar in this case, I can only tell you what I have done to make a usb device be usable for a normal 4.5 user. The rest is guessing...
Be logged in as root, plug your camera in - the link on the desktop appears. Rightclick to its properties. My link tells me that my camera, mp3 player or usb stick (whatever I plug in first in this session) is /dev/sda1 (for there are no other (emulated) scsi or usb devices, the second device will be /dev/sdb1 even if I remove the first one before it) and is mounted to /root/.D (every usb gets mounted to .D if it is the only one attached).
Now I look at /dev/sda1 and see it belongs to user root, group disk.
I edited the group "disk" with kuser so that my user belongs to that group too.
Maybe that will be enough, for 4.5 it was.
If not, additionally try this:
Symlink /root/.D (or the directory shown in your link) to /home/youruser/.D and make /root/.D fully accessible to group disk (to which your user now belongs (or create a directory somewhere else and symlink it to both).
Copy the link created on the root's desktop to /home/youruser/mydevices or so - whatever you like and where you can find it
I guess the OS is smart enough to recognize the plugged in device even if you are not root. It just won't show the link. So when you have a permanent link for your user you can mount and access the device by clicking on it. At least I hope so...