Can not connect more than one usb camera to record

[harun00]

hello I am trying to connect more than one usb camera to record on my computer, and I bought four cameras sirius 12mp, usb hub and cable with amplifier.These cameras are plug&use and when I conect usb hub and four cameras works normaly.When I add cameras to Active web cam and other programs to record first camera works good and recording but when I plug second camera the screen become black and show me:
12/2/2009 22:02:57, Camera 2: Error 8007001F: Cannot run preview graph!
If anyone know what is the problem help me! thanks

[doctorhardware]

You need a program that is capable of recording 4 cameras at the same time. Like that would be used as in a security setup at like a bank.

[harun00]

Thanks for reply ,All programs that I used like Active webcam , icatcher and others are using more then 4 cameras ,but I think its not problem with this.Do you know some other programs?