Logitech to Mac

1st You download Webcam Driver.
Logitech Software
After this install the Webcam driver in the system.
Installation of Webcam Driver
Go to the control panel
Click on the System Icon
Click on the Hardware Tab
Click on the Device Manager s
Select the Unknown Device or printer device where yellow Question Marks sign on it.
Right click on it and uninstall it.
After this go to the top of the device manager and click on scan for hardware changes.
Driver installation Wizard start.
Brows Your Driver from the Hard Disk and click on next.
Driver will be install.

I had a search and found these Q&A's, so see if these can sort out your problem. Q. Can I talk/see to Windows users? A. Yes, there are video conferencing standards in existence, and if these are adhered to and implemented properly it should mean that Mac applications could connect to Windows applications - or even dedicated hardware solutions. However, at the moment, the simplest way is to use iChat on the Mac, and AIM on the Windows system. The results are nowhere near as good as an iChat to iChat link, but it works. Also, consider iVisit, Yahoo Messenger, SquidCam or ohPhoneX. Q. Can I use Virtual PC on the Mac to use MSN Messenger, and so talk to Windows users that way? A. In theory it might work, in practice I've not got it to work using Virtual PC 7 and a USB Logitech webcam. (Virtual PC will definitely NOT support the FireWire iSight camera). The USB camera required drivers to work on the Virtual PC, and installing them caused my iMac G5 to crash. Even if it did work, Virtual PC is NOT fast at this kind of thing and would probably not work very well at all with video conferencing. If you really need MSN Messenger to work quickly with video, it's almost better picking up a cheap PC.