Yes, if you have internet explorer you must install active x software to be compatible. However, if you're using (firefox, chrome, safari) you must install Quicktime.
In order to fix the microphone you must attach the wires to the microphone. The best way to do this is by soldering the wires and microphone ends together.
Unfortunately the answer is no, the way this device was made in the factory only allows for the bottom section of the device to be taken apart. So detaching the top cap is the most efficient solution.