Just don't expect a lot from these cameras, like framerate, picture quality and low-light capabilities. I've worked with dozens of webcams, and the IBM cameras were easily the worst...
Personally, I would (did) spend an additional $20-30 and go for an Intel Deluxe or Pro, or the Kodak. These go on sale and/or have MIR regularly, and with the superior quality, a few extra bucks will be well-spent.