INTRANET WEBCAM AND VOICE SPYING

This is simple I need a small software to work on an INTRANET ONLY NETWORK, this will run in a small computer lap for about 40-60 PC having WIN XP, VISTA OR WIN7. The software will have a dashboard where all the webcams of the PC in the network will show. Well I know some webcam has lights on it, and it turns on if the webcam is on this doesn't matters. There should be an option for the [login to view URL] PCs connected list is shown and the teacher should be able to listen to his/her mic or spy his/her mic One-to-one only. So there are only two options, 1- To spy all webcams in the network, 2- Listen to a specific student's spy without the student knowing. If you want you can use any opensource software and or anything else but the final software should work on Windows XP, Vista & 7. with easy to install. There is no licence key to be added. Looking forward for you bid and working with you, if you need any more clarification please let me know. Thank you.