Macbook not recognizing USB ports from external monitor.

I have a Dell Monitor hooked up to the VGA port and have several items (printer, external hard drive) hooked into the ports on the Dell monitor. My Macbook is not recognizing the things that are plugged into the monitor.
These ports were working at one point but when I moved my setup and had to plug everything back in I can't get the USB ports on the monitor to work.
Along the same lines...I tried connecting the monitor to my laptop with a USB cable (female port from back of monitor to male port on Macbook) along with the VGA port. This did not fix the problem but I just wanted to know (had my laptop been recognizing the ports) if this was even necessary.
Since this setup has worked before I'm thinking it is something small that I am missing but any help would be appreciated.
Macbook Pro Mac OS X (10.4.7)

Hi,
Please go to the following site and click Scan now:
http://h10025.www1.hp.com/ewfrf/wc/softwareCategory?os=228&lc=en&cc=us&dlc=en&sw_lang=&product=31841...
Hope this helps.
BH
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Macbook not recognizing USB ports from external monitor.

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