If you want to change the button on the top of your MS webcam from MSN to OCS client do the following:

Step 1. Download LiveCam 1.3+

You can down load LiveCam 1.3+ from here:

http://www.microsoft.com/hardware/digitalcommunication/downloads/default.mspx

64bit of Lifecam v2.04 found here

http://www.microsoft.com/windows/compatibility/Details.aspx?type=Hardware&p=Microsoft%20LifeCam%20NX-3000%20-%20web%20camera&v=Microsoft&uid=&pf=0&pi=0&c=Cameras%20%26%20Photo&sc=Webcams&os=64-bit

Step 2. GPO or Registry

You can then download the GPO or app that will change your Call Button to open w/Office communicator

http://www.microsoft.com/hardware/digitalcommunication/officecommunicator/default.aspx

http://www.microsoft.com/hardware/digitalcommunication/officecommunicator/enterpriseagreement.aspx

If you want to set this up on windows Vista then you can’t go the ADM route (ADMX files are the new type)

You can use the ADM2ADMX converter:

http://www.microsoft.com/downloads/details.aspx?FamilyID=0f1eec3d-10c4-4b5f-9625-97c2f731090c&DisplayLang=en

Or just add the following registry key:

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Hardware]

"EnableMOCIntegration"=dword:00000001

Step 3. Run the exe

Download the zip file (Office Communicator - Call Button Integration Support Kit.Zip) file and run OCSupportKitLifeCam.exe

http://www.microsoft.com/hardware/digitalcommunication/officecommunicator/default.aspx