Even if you do download and install that version, which is not recommended, you may still have to use Video Call, as your contacts will more than likely be running either the latest stable version, or the new beta version, neither of which have the "Send Webcam" option, so it doesn't matter if yours does, you won't be able to use it
Please see the following thread for further details:
[!] One-way webcamming (send/receive) not working?