IChat USB problem with seemingly no solution

I am working on a PowerPC g5(10.4.10) and am trying to get my webcam(Logitech Quickcam 4000) to work through a program called iChat USB(http://www.ecamm.com/mac/ichatusbcam/).
The webcam worked last year on my mini mac, but after moving to a new computer it will not work.
When I open the video function of a iChat it says, "Camera in use by another application". Well, its not. I have close all application, unplugged and replugged my USB cable. Downloaded Macccam.Downloaded the logitech drivers. Nothing works.
One odd thing I tried was plugging the webcam into my keyboard. When doing this the green light stays on(i cant remember if it did this on my mini(10.3.9), but it doesnt do it on my g5) But while plugged into the keyboard I do not have enough USB power.
This is coming from a guy who is 600 miles away from his girlfriend for a year, and he needs your help. So if you have any ideas, or know of a webcam that might work (I have herd somthing about the xbox 360 webcam) please let me know.
Thank you so much

eacahill:
Unplug the camera, shut down the computer.
Start up in Safe Mode
Login and empty Trash.
Restart normally and log in.
Connect camera
Repair Disk Permissions in Applications > Utilities > Disk Utility
Go to Apple menu > About this Mac > More Info > Hardware > USB
Please post back and let me know what you find.
Good luck.
cornelius
Look down to the lower section of the main pane.

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Attachments:
Schermata 2013-11-11 alle 17.13.07.png ‏285 KB

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