Hey Holmes, you can post it as you wish.
And no, neither of your languages are normal.
I stated time's over that its old. Wouldn't think its wireless?
To power something, perhaps turn it on? an application to turn it on.
Oh wait is this the elecrtric wiring forum.
Smartass

How about you try Google. Perhaps searching on "webcam kde".

Does the name Kopete ring a bell?
You know what happened when I hooked up a webcam and typed dmesg on the prompt? It told me:
usb 4-1: new full speed USB device using uhci_hcd and address 2
usb 4-1: new device found, idVendor=046d, idProduct=08b2
usb 4-1: new device strings: Mfr=0, Product=0, SerialNumber=0
usb 4-1: configuration #1 chosen from 1 choice
Linux video capture interface: v2.00
pwc: Philips webcam module version 10.0.13 loaded.
pwc: Supports Philips PCA645/646, PCVC675/680/690, PCVC720[40]/730/740/750 & PCVC830/840.
pwc: Also supports the Askey VC010, various Logitech Quickcams, Samsung MPC-C10 and MPC-C30,
pwc: the Creative WebCam 5 & Pro Ex, SOTEC Afina Eye and Visionite VCS-UC300 and VCS-UM100.
pwc: Trace options: 0x0001
pwc: Logitech QuickCam 4000 Pro USB webcam detected.
pwc: Registered as /dev/video0.
usbcore: registered new driver Philips webcam
usbcore: registered new driver snd-usb-audio
Oh wow, I have a Logitech QuickCam 4000 Pro USB webcam and the driver is loaded automagically. Let's try Kopete, "Testbed" sounds about right for what I'm after. Hmmm, maybe I have to try Settings, Configure. Devices sounds right again.....

No shit! It's my webcam recording the output of my webcam!

(with a lovely
Droste effect as bonus)
And that took all of 1 minute, a bit of help from Google, about 10 mouseclicks and no additional installs whatsoever (the 4000 Pro is probably a bit newer than your Express).