If you've been itching for a chance to play with the new Project My Screen feature from Windows Phone 8.1, the PC program you need to get it started is now available from Microsoft's servers. You can download the installer right here
The program seems easy to use. Simply make sure you have all your drivers sorted, install the program on your computer, and run it while your Windows Phone 8.1 device is plugged in. There's already a good bit of chatter about this feature in our forums, so be sure to jump in and add your take on things, too.