I thought I would post this for those of you that are upgrading to Windows 8 and wanted to create a simple way of accessing Project Server. In this particular case I am going to show how to pin Project Online, but the same is possible with your on premise Project Server 2013 and 2010 instances.
Pinning from the desktop
To start, navigate to your Project Server instance in either Internet Explorer 10 on the desktop.
Click on the Cog icon on Internet Explorer to open up the settings menu.
Click on ‘Add site to Start Screen’, a dialog will be shown to confirm creating the shortcut.
And that’s it for the desktop version. The shortcut is created.
Pinning from the Metro / Modern / Windows Store UI
The process is slightly different for the Metro / Modern / Windows Store UI version of IE.
1. Navigate to the PWA site in IE
In the bottom right hand corner, click on the Pin icon.
Choose Pin to Start, a dialog will be displayed giving you the option to Pin to Start.
Click on Pin to Start and there you have it.
As you can see the output from pinning is slightly different depending on the source of pinning.
Personally I prefer the Metro / Modern / Windows UI pinning, it looks much more in place in my start screen.
Happy Pinning 
