Webcam Woes

I own a Logitech Quickcam Express I got for free with some promotion, and I’ve been trying to get it working with Kubuntu on my Powerbook to no avail.  There’s a quickcam kernel module, which requires video4linux support, which I loaded.  The problem may actually be USB-related, though I’m not sure yet.  I spent an hour or two messing with it.  When I tried this on my old and busted Gentoo box, it loaded up the modules, and worked right off the bat, so I’m not sure what’s going on.  More later if I end up fixing it.