The VMware VMRC plugin can only be installed on Windows and Linux computers.
After downloading, open a terminal, navigate to the folder you downloaded the file to and run the following command:
sudo sh VMware-VMRC.i386.bundle
After downloading, open a terminal, navigate to the folder you downloaded the file to, and run the following command:
sudo sh VMware-VMRC.x86_64.bundle
Please note that the installer will likely require you to close all of your browser windows. Don't worry, your lab will be waiting for you when you get back.
Unfortunately, the VMRC plug-in doesn't work properly when Internet Explorer is running in protected mode. This is the default behavior in Internet Explorer when visiting a website on the internet. You likely saw a dialog box asking whether to allow the plug-in to run outside of protected mode. Alas, clicking "Allow" in that dialog doesn't actually fix the problem.
The easiest way to run a webpage outside of protected mode is to add the site to your trusted site list.