Hover over the plugin. You will see some text appear to the right side. One will be 'Install". This will add it to your active plugins list. Some plugins have configuration options; once they are installed. Again; hover over the installed plugin, if "Settings" appears to the right, there are configuration settings for that plugin.

thanks for help, but the page like I put, nothing on the right side. the problem is for my ie or my download version is not correct?

show me is  Platform version 1.8.1 (build 10200), is this correct?

Yes. 1.8.1 build 10200 is correct. To install the plugin all you should have to do is hover over it with your mouse. You should see "Install" "Delete" to the right of the plugin. Click on "Install". It should then install, and move to your installed plugins page. If you don't see this, something else is wrong, and Ross will need to jump in.

Jason do you see the buttons "install" and "delete" when you hover over the plugin you want to install?

Darryl,ross,thanks help, I can't see "install" and "delete" button on the page, and I changed ie and chrome to try, same as no button on the page. :(

THANK YOU, GOT IT.:)

Great, thanks for letting us know.