G-Recorder installation is simple and takes seconds. You can install G-Recorder on any number of computers where you use Skype. Your Skype history will be saved to Gmail from all of them and merged chronologically (1).
G-Recorder is launched automatically when installation completes. You can use G-Recorder for free or upgrade to the full version - the free trial lasts for 14 days.
You will be asked to configure G-Recorder for first run. A wizard will lead you through a couple of simple steps.

To be able to store your calls and chat history on Gmail, G-Recorder will ask you to login to your Gmail account. G-Recorder uses your credentials only to send chats and call recordings to Gmail.
Make sure you authorized the plugin in Skype as it is shown below:

If you don’t see this window please try to find it on your Windows Taskbar or look at Skype main window’s top corner.
If G-Recorder cannot connect to Gmail please make sure that IMAP is enabled in your Gmail settings. You can enable it on your Gmail Settings page as it is shown on the picture below:

When G-Recorder is successfully connected to Gmail, it is ready for use. You can read more about its usage here: How to use G-Recorder