Can anyone recommend a good webcam? I have an old 3Com HomeConnect that has a great image and fast refresh, but just isn't supported by software anymore (and I think it is messing up my XP). I have a fast machine, gobs of memory, and USB 2...I would think someone would have made a USB 2 webcam by now. I need this for business video conferencing, so am willing to spend a little more than not. However I don't want a $1000 unit, either. I just don't trust a sub-$100 unit to provide a good enough quality image. I checked online, but it seems that most video cameras are under 100 and for the very casual home user. Is there something for the casual business user? Anyone have experience with the Logitech 4000 ?